This feeds and receives from Internet Mail.

Use it to send to an SMTP server (local or remote)
and receive either on a local 'sendmail' server (Unix only) or from a POP3

We define OUTGOING as FIP -> SMTP and the reverse (SMTP or POP3 -> FIP)

(use program 'smtpwire' to receive incoming SMTP traffic or 'imapwire' to grab
from an IMAP server)

Routing Files Outbound
Messages for sending are put in the input queue, usually spool/2smtp, with the
FipHdr field DA containing one or more Mail Address (separated by commas if
multiple) - such as wizzo@fingerpost.co.uk.

Messages can be sent directly to the spool/2smtp queue, routed normally by Fip
or as a group client for Syndication by IPPOST.

In the latter case, the client is specified as type:unixmail and there is a
special DU called TOUNIXMAIL in USERS which has the syntax :
    TOUNIXMAIL= DP:(hostname)   DQ:2smtp    DC:(whatever)
    where hostname is the name of the UnixBox doing the transfer
    and whatever is the character set required.

The From field or sender is the header field SU or, if it exists, the SA
(Source Author) which is formatted as SA@SU. SU is normally the Source system
or type while SA is the normally the logon or sender. If the SA is an Atex
style 'LOGON ;dd/mm,hh/nn' then only the logon is used.
So if the SA:fippo and SU:liverpool-fc.co.uk, the sender becomes
If the SA is ALWAYS the full address - like SA:hedgehog@flea-pit.com, then use
the '-F' input switch to NOT add the SU header field.

If neither SU nor SA exist, the default sender is 'fip' unless overridden by
the 'defsender:' in the parameter file. Note that this name must be in the
passwd file as a valid logon.

The data of the outgoing messages will be converted if 8 bit or control chrs to
the normal '=XX' hex format used.

Routing Files Inbound

Messages from the Internet are sent to the special DU, FIPMSG which is either
hardcoded to a specific destination, or more usually, directed to IPPOST to
detetmine if the recepient is on the editorial system OR is a mailbox (IPBOX)


If things do NOT look like they are working, you can run ipsmtp/ipsmtpssl
manually with the -1 and -D to run once and display the handshake.

Parameter File
The parameter file, normally tables/mail/SMTP, is read for the logon names to
scan on a regular basis plus the destination to send these to. The syntax of
the parameter file is :
    ; comment
    defsender: (default sender)             default: fip
        Used ONLY if there is NO fipHdr field SU nor SA.
        This is used for the 'From:' field for outgoing messages.
    forcesender: (Force sender to this logon)       default: no
    force-sender: (Force sender to this logon)      default: no
    default-sender: (Force sender to this logon)        default: no
        This is the default reply-to address. It must be a valid logon and domain. It
is also used for the 'From:' field for ALL outgoing messages if there is NO
'forcefrom' (see below) or FipHdr field 'DJ' in the file to send irrespective
of whether there is a FipHdr SA or SU.
        default-sender is used ONLY if there is no force-sender and nothing in DJ
        It should be JUST the address :
            forcesender: lucy@sky-with-diamonds.com
    forcefrom: (Force the From field)
    force-from: (Force the From field)
        This is the From field in the outgoing file which does not have to be the
same as the sender's address.
        If using the '-h' host input switch it can contain a 'pretty'
        version :
        eg  forcefrom: "MP3 king Steinhoff" <dohrayme@singalong.com>
    defdest: (default Fip Destination (DU FipHdr field) default: FIPMSG
    helo-host: (hostname.domain)
    ehlo-host: (hostname.domain)
        Use this name for the HELO or EHLO (hostname) message to the remote (SMTP
outbound) who normally want a full hostname-domanme which is in DNS so they can
verify it.
        default is just the hostname
        eg ehlo-host:mail.hashtagnotme.com
        This field can be FipSeq - a temporary FipHdr field S1:(hostname)
        Of course S1 is dependent on the correct hostname being setup on that server
    add-return-path: (FipSeq for address)
        Add a 'Return-Path: (address)' to the outgoing SMTP mime header     default: no
        eg  combie:QR   SA,sweetsounds@cacophony.com

    chrset: (Source character set ie SC header field)   default: ascii
    hash-in-address: (FipSeq Chr)
        Some old-style email addresses have a leading hash/pound/# sign - but a hash
is a field sepearator in FipHdr. So another chr is used in the DA FipHdr and
mapped at the last moment.
        default is \243
    hash-in-fiphdr: (FipSeq Chr)
        Sometimes a Subject line might have a hash/pound/# sign - but a hash is a
field sepearator in FipHdr. So another chr is used in the DA FipHdr and mapped
at the last moment.
        default is '#' (ie a hash is a hash and that is where the FipHdr field ends
        eg in tables/route file, map a HASH out of the way  : HASH-IN-HDR:\035
            in the ipsmtp parameter file, to map back   : hash-in-fiphdr:\035
    fiphdr-remote-address: (2 letter FH)
    newDA: (2 letter FH)
        FipHdr field to replace the DA field which  default: DA
        holds the email address of the person to sent to.
        eg  newDA:DZ
        This can also be an combination field :
            combie:QA   DA|DZ|NA
    fiphdr-local-address: (2 letter FH)
    newSA: (2 letter FH)
        FipHdr field to replace the 'MAIL from' address field.  default: SA
    fiphdr-subject: (2 letter FH)
    newDI: (2 letter FH)
        FipHdr field to replace the DI field which is used for the 'Subject' field.
default: DI
    fiphdr-from: (2 letter FH)
    newDJ: (2 letter FH)
        FipHdr field to replace the DJ field which is used for the 'From' field.
default: DJ
    fiphdr-reply-to: (2 letter FH)
        FipHdr field which is used for the 'Reply-to' field.    default: none and From:
is used
    balance-seqno:  Send the Sequence number to this Balance Group
            (see 'ipbalan')
    balance-delete: Delete the Data on remote systems once sent
            using this Balance Group (see 'ipbalan')
    forcedomain: (domain name)              default: do not
        Strip any domain in the FipHdr field SA and add this one in its place.
        So if the SA:albert@redsunderthebed.com, then the from field becomes
            From: albert@commies.com
    strip-domain-on-send: Send only the logon/mail name default: domain too
        and strip any domain name.
    defsubject: (default Subject line if nothing specified)
            default: "Message for you"
    att-message: Message to replace an attachment with.
        default:** Attachment has been Stripped, pls contact System Managers for
(name of attachment file)
    log-line: (FipSeq) Additional information for the log file entry in ALL
    extra-log-fiphdr: Fipseq FipHdr fields to add to any transmission log
        This is triggered on a file by file basis by the FipHdr field
ZSMTP_LOG:(dest) in the file to send - (dest) being a valid DU in
tables/sys/USERS. Use this to pass FipHdr fields from the incoming file to the
        default: none
        eg. extra-log-fiphdr:\n\SI:\SI\n
    send-new-fiphdr: Fipseq FipHdr fields to add to any outgoing file to act as
defaults etc
    send-extra-fiphdr: Fipseq FipHdr fields to add to any outgoing file to act as
defaults etc
        The NEW variant is added BEFORE the real FipHdr, so can be used for Defaults
(and the real FipHdr fields can override these).
        The EXTRA variant will add at the end of the file's FipHdr and so will
override any setting,
        This is triggered on a file by file basis by the FipHdr field
        default: none
        eg. send-extra-fiphdr:\nZSMTP_TYPE:text/plain\n

    stream-connections:yes              default: no
        Do NOT drop the connection/reconnect for every file.
        Once a connection is up to a mailserver, any subsequent file for the same
server is sent in the same transmission.
        (using SMTP only)
    keepalive-every: 50             default: 30 secs
        Streaming only - Min time in secs between keep-alive (CRNL)
    offline-queue:(FipSeq)              default: none
        Offline queue if item errors (same as and overwrites -x input switch)
        ipsmtp will NOT scan the offline queue - the assumption is that another
ipsmtp will be polling that folder.

    fiphdr: (Map incoming mail field to a Fip Hdr field)    default: none
        fiphdr:DI   Subject
        fiphdr:AZ   Message-Id
    ignore: (Mail header field to always ignore)    default: none
        ignore: Status
        ignore: Apparently-To
        ignore: X-Msmail-Priority
    unencode: Decode any base64 sections.   default: no
        decode:  This will NOT decode attachments
        decode:text This will NOT decode attachments
        decode:all  This will decode body AND attachments
    maxattempts: (no of attempts before the file is sent to woops)  default: 10
        This checks the FipHdr 'DO' which is managed internally. (UNIX only)
    logeachfile:(dest) Send a Success/failed msg to this destination for each
            There is no default.
            This log file is just a FipHdr with the following extra fields :
                DR-File Sent OK  DR:ok or DR:error
                DG-Will Retry later DG:retrying or DG:stopped
                DT-Some message text    DT:No connection
                DO-Number of last attempt    DO:5
                HT-Date and Time    HT:25 Nov 98 15:35:25
            default: no log created.
            The DR and DG messages can be changed by using :
            eg: log-dr-ok:File \VN sent to Remote Number \DA (\$h:\$n)
    msgeachfile:(FipSeq) Additional information to add to the FipHdr of the
'logeachfile' msg.
            This should be in FipHdr format and be in FipSeq. It can be used to pass
FipHdr fields in the outgoing file into the log file.
            eg  msgeachfile:    DF:logdial\nSS:\SS\n
            default: nothing added
    send-via-smtp-relay: (yes/no)
        For SMTP outgoing files :
            YES - send everything to a single SMTP Relay host   (default)
            NO  - send each file to the mailhost of the recipient   (Same as the -X input
    local-domain: (domain name) (space) (IP address of local mail server)
        For SMTP outgoing NOT sending via a reply
        There can be up to 10 local-domains
    local-domain-queue: (queue in spool)
    local-domain-name: (filename in FipSeq)
        For any match to local-domain
            ; a single DA is added at the start; add XX:\$u.\$z.\$v for uniqueness

    default-smtp-host: (hostname or IPaddress)
        For sending emails out - Same as the '-h' Input Switch
    alternate-smtp-host: (hostname or IPaddress)
        a failover hostname for if the default fails
    connection-timeout: (secs)
        Max time in seconds for the connection to the SMTP server
        The call is aborted if it takes longer than this.
        If the remote is across the computer room, this time can be reduced to 15 or
20 secs; if over the internet, 120 secs is the norm.
        default: 120 for 120 seconds, minimum is 10

    send-single-smtp: send smtp in one file per session which is then cut and
reopened for the next file/session.
    hostname: (hostname to use)
        Cosmetic !
    port: (port number of the remote)
        This overwrites the -P input switch
    timing-stats: yes/no
        Show timing stats if the incoming file has the HE/HR fiphdr
        default: no

or  use-external-file:
        if there is an SX FipHdr field with a path to the data file, use that rather
than the data in the input file.

    wrap-subject-chr: (FipSeq chr)
        If the Subject field has this chr, wrap the line
        default: none
        This might have been added by ipxchg :
    force-subject-wrap: (No of chrs)
        Normally  subject lines at this total
        default: 76
        eg force-subject-wrap:76

    locale: use a different 'locale' ( look at the man pages for locale)
        Most computers are set to US English and never changed.
        Use this parameter to customise any date/time or Chr translations
        The parameter MUST be a valid locale on your system!
        To find out what valid locale exist, type 'locale -a' on unix.
        Eg  ; Set for for Brazil, portugese

    check-primary-server: pseudo-host name that is specified in
        Use this when for POP3 accesses ONLY where ipsmtp on 2 systems is accessing
the same POP3 account(s) in a redundant way.
        It is used to decide whether the current host should be getting the files or
        ie in the parameter file is
        and in the DEST_REDUN is
            ; psuedohost    primary secondary
            timersvr    fip1    fip2
        and in the SYSTEM file for both fip1 AND fip2 there is  the same 'ipsmtp'
line with the same parameter file
        If fip1 is up,  'ipsmtp' on fip1 will always get while on fip2 it will just
        If fip1 is down 'ipsmtp' on fip2 will start processing the files.

        The commends are for a ftp running over SSL/TLS on the remote server
        default is NO
        no      - normal, standard SMTP on (normally) port 25
        yes or explicit - connect (normally) on port 465 in clear then send STARTTLS
and SSL for AUTH
        implicit    - connect (normally) on port 587: use SSL for all conversations
    tls-auth: (XXX)
        AUTH type for TLS/SSL                default: TLS

    auth-login: (data)
    auth-pwd: (pwd)
        login and password for TLS AUTH LOGIN authentication

    auth-plain: (string)
        login and password for TLS AUTH PLAIN authentication
        To generate the auth-plain string : printf "(logon)\0(logon)\0(password)" |
sffb64 -i

    ssl-method: (1,2,3,23,999)
        Version number to use for TLS/SSL       default: 999 for current default (2 or 3)
    ssl-password: (password)
    ssl-passwd: (password)              default: none
        Optional password if the handshake requires a shared secret
    ssl-pem: (name of a PEM certificate file)       default: none
    ssl-cert: (name of a PEM certificate file)      default: none
    ssl-root-cert: (name of a root PEM certificate file)    defaunt: none
        Optional certificates - held in tables/ssl
    ssl-verify: yes/no  verify certificates     default: yes
    ssl-ciphers: (list) acceptable ciphers
        (use 'openssl ciphers' to list)
        default:  "HIGH:!aNULL:!kRSA:!SRP:!PSK:!CAMELLIA:!RC4:!MD5:!DSS" (from 16v25)

-- For HTTP proxies :
    proxy-connect: (FipSeq)
        Proxy Connect (or Wakeup) string for network device default: none
        This wakes up the pad on startup or Connects via a proxy
    proxy-host: (hostname)
    proxy-port: (port)
        These are ONLY used for the TLS hostname checking as the name may be
different to the connection IPaddress
    proxy-is-squid: (yes/no)    - placeholders
    proxy-handshake: (yes/no)   - placeholders

-- For Socks 4/5 proxies :
    use-sock: (4 or 5)
    socks-host: (hostname of the socks proxy)   no default
    socks-port: (port number of the socks proxy)    default: 1080
    socks-user: (user name for the socks proxy) no default
        if nothing specified, assumed that there is none
    socks-pwd: (password for the socks proxy)   no default

-- For accessing Oauth protected assets
        Use OAUTH to grab/use an access-token or Bearer token eg for Gmail access
        default is NO

    oauth-refresh-script: (Script in FipSeq)        script to generate the access_token
using a refresh_token

    These 5 FipHdrs are use to generate, check, add/renew permissions to access
the remote data - normally Gmail.

    oauth-client-fiphdr: (FipHdr)   default: IC
    oauth-secret-fiphdr: (FipHdr)   default: IS
    oauth-access-fiphdr: (FipHdr)   default: IA
    oauth-refresh-fiphdr: (FipHdr)  default: IR
    oauth-expiry-fiphdr: (FipHdr)   default: IX

-- Then for EACH logon you wish to track INCOMING Sendmail mail boxes, specify
a line begining :
        logon: (logon name)             default: none
    or  unix: (unixlogonname)               default: none

    These two parameters are identical.
    There is also a means, for UnixBoxes only, to poll for ALL mail
    for ALL the members of a group (as in the /etc/group file) :
        group: (unixgroupname)              default: none

    Whether 'logon', 'unix' or 'group' there are other (optional)
        fiphdr:(FIP hdr sequence)
        pop3pwd: (Password for POP3)
    where   sendto: allows you to specify another name for the DA field IPPOST will
use this to route. By default, the Fip Hdr field DA will hold the logon name.
        fiphdr: allows you to add to the FIP hdr. This may be any - perhaps the DU
field to change the destination.
        striphdr: will strip the SendMail header except for the From and Subject
        pop3pwd: specifies the password to use IF you are accessing a POP3 server to
receive incoming mail.  It is NOT required for UnixBoxes scanning local mail

-- To add a new logon :
    1. Read the 'passwd' file for the exact Unixlogon name - eg newboy
    2. Enter this name in SMTP file as :
    3. If this is the same name as in file ATXMSG, enter line
        newboy  edone
        where edone is the name of your editorial system
    4. If 'newboy' is really called 'dirtyoldman' on the 'atex'
        editorial system, the entries should be:
        SMTP file - logon:newboy    sendto:dirtyoldman
        ATXMSG file -   dirtyoldman atex

-- To setup IPSMTP for Sendmail mailboxes :

    1. Create logons as above
    2. Check you have destinations in the USERS file :
        FIPMSG=     DP:fipmain  DQ:post  DC:atexeol
        MSGFORATX_EDSYS=    DP:edsys3   DQ:atexq-grp    DC:atexeol
        where 'fipmain' is the name of this UnixBox.
        Destination FIPMSG is generated by IPSMTP.
        Destination MSGFORATX_* is generated by IPPOST IF the name is in the FIPMSG
        eg if the Editorial System is called ATEX (environment variable FIP_EDSYS)
and teh queue required is email-wir on system3 :
            MSGFORATX_ATEX= DP:atex3    DQ:email-wir    DC:atexeol
    3. Input Queue spool/2smtp needs to be added
    4. IPPOST needs to be running too (unless you change the FIPMSG DP/DQ to
somewhere else)
    5. Outbound Format is ATXMSG for IPGTWY/IPOUT/IP2WTR etc.
        Please check if this exists and has the correct setup

The current version can scan up to 1000 Unixmail boxes.

-- Where sections of FipHdr fields are required or changes to the output style,
 keywords : fixed, partial, combie, optional, repeat, newdate and/or style.
(see The SysA
dmin manual for more information).

    They are normally specified :
        fixed:QZ    1234543
        partial:QT  ST,3,2,U,<,>
        combie:QY   ep|na,(0000000)a
        option:QE   ep,11,7,s
        repeat:QK   XK,-,3
    or  repeat:QP   PK,,4,#X
        style:QS    XN,%.03d
        replace:QN  NN  abc=DEF def=GHI

-- For outbound traffic, FipHdr fields used are :
    DA  holds one or more remote email addresses
        multiple addresses are separated by a comma.
        Can be overridden by 'newDA'
        Can be changed by 'forcedomain'
    SA  holds the sender's email address
        can be overridden by 'forcesender' (actual address)
        can be overridden by 'forcesender' (from field)
        can be defaulted by 'defsender'
    DI  holds the Subject: field
    DJ  holds the From: field
    ZSMTP_BINARY    if not 'no' will send the file as Binary and make NO attempt to
change the length
    ZSMTP_ENCODE    holds the Content-Transfer-Encoding
        default to  Content-Transfer-Encoding:quoted-printable
    ZSMTP_TYPE  holds the Content-Type. no default
    ZSMTP_LOG   will send a log of the SMTP transmission to this destination (for
SMTP outbound traffic using the '-h' input switch only)
    ZSMTP_HOST  IPaddress or hostname of the mail server if NOT the default (for
SMTP only).
    ZSMTP_ADDMIME   if not 'no', add standard MimeHeaders to the top of the file
(default is YES, unless -H is set for NO)
    ZSMTP_CHECKMIME if not 'no', check the  MimeHeaders (overrides

Input Switches

Input parameters are : all optional :
    -1 : Get once only then stop for POP3 or Receive only.  default: spool
        Either -p (path) or -3 (pop3 server) must be used with this option
        This also incorporates -Q so no queu is scanned and no mail sent.
    -2 : (filesname) Send a single file by SMTP and stop    default: spool
    -3 : Hostname where the pop3 daemon is running.     default: none
        Note -p and -3 are mutually exclusive.
    -a : queue for non-text attachments         default: none
        default is that attachments are passed through in text
    -A : destination for non-text attachments       default: none
        default is that attachments are passed through in text
    -C : do NOT convert unprintables to "=XX" format  default: do
    -d : do NOT delete each unix msg            default: delete
    -D : display the conversation with the remote server    default: no
        valid ONLY with the -2 or -1 for single shot; used for debugging troublesome
    -e : extra FipHdr/FipSeq which will be added for each outgoing file.    default:
    -f : do NOT output the original filename as the first line of text. default:
output name
    -F : do NOT output the original sending system (SU) as the From field.
default: From: SU
    -h : Hostname where the smtp daemon is running.     default: that system
        NOTE that sendDirect can be seelcted by either -X or -h+
    -H : do NOT add an extra Mime Headers as the file is in the correct format.
default: add To/From/Subject
    -i : Receive spooled queue if you are using 'sffmail'   default: using Path
    -k : alternate host name                default: none
        use this for checking primary/secondary for clustered systems where the
actual hostname differs from the cluster name
        ie if the host name may be fipcluster-a or fipcluster-b but there is a
cluster hostname of fipcluster
    -K : quiet mode - message if NOT the primary system default: do not message
    -l : do NOT log each msg in or out          default: log
    -m : (ipchkmail folder name)                default: process inside ipsmtp
        Do not convert incoming SMTP and POP3 files immediately but pass them to
ipchkmail running on this folder which does a better job! especially for

    -o : Next fip queue for incoming files          default: spool/2go
    -O : Done queue for spooled files out           default: none
    -p : Path on this system holding mailboxes      default: depends on the OS
        Unix only. The full pathname MUST be stated.
        Note -p and -3 are mutually exclusive.
    -P : port of remote host                default: 25
        Note normal usage is -P 465 if using 'use-tls:implicit', or -P 587 for
        Also note that parameter 'port:' will override this value
    -q : Send Queue to spool                default: spool/2smtp
    -Q : Do NOT send any mail and therefore do NOT scan any input queue.    default:
    -r : eolns for the data part should be CR NL        default: just NL
    -R : do NOT resolve hostnames               default: do resolve
        This will resolve any hostnames in the DEST_REDUN file (if there is one)
    -S : do NOT split files on the "From ..." line        default: do split
    -t : scan time of queue                 default: 3 secs
    -T : log the trace of each transaction          default: do not log
        Normally a one line log of each file sent is stored in
        log/remote_trace with a name of 'date_Address'.
    -w : for file->Sendmail, set line length.        default: 76 + translate
        and do NOT translate unprintables to "=XX" format
        To NOT wrap text and no translations -w 0
        This can be ignored for a single file if it has the FipHdr field
    -W : for files outbound, set JUST the line length   default: 76 + translate
        but still translate unprintables.
    -x : Offline queue                  default: none
        Normally ipsmtp will retry - and possible delay files also queued up - any
message that has not been delivered.
        Use this to shuffle files that error to a different folder where another
ipsmtp will take care of the baduns
    -X : Send directly to the Email server of each destination  default: no, use a
single relay server
        This depends on the resolv.conf or Windows DNS to be setup correctly of
        NOTE that sendDirect can be seelcted by either -X or -h+
    -z : parameter file                 default: mail/SMTP
    -v : display version number and exit.

Now a statement of sanity (?) about incoming mail from the Internet :

If like most of the civilised world you prefer to keep well away from anything
'sendmail' can throw at you, then let ipsmtp just grab its files from the
sendmail internal queue. Or even better use POP3 and forget about it all - no
setup, no nothing extra!

If you are unlucky enough to have a Sendmail specialist on your staff, before
sending for the men in white coats, point out there is a '-p path for unix
mailboxes' switch. Your guru should dictate (they always dictate - though they
claim they are working with your best interests in mind) where he is willing to
drop files for those logons you are interested in and add the -p switch to the
tables/sys/SYSTEM file. Easy huh !

Note there was a subtle change at version 15 which changed the default from

Version Control
;16v53   9nov01 cleanup after failed connections better
    ;a 16mar02 added remote_trace and -O done queue
    ;b-c 03jun03 cleanup line-enders in mimehdr and streaming for smtp
        and added ZSMTP_HOST
    ;d-i 22sep03 added send-extra-fiphdr: and stream-connections:yes
    ;j-l 29jun04 added -1 and speedy
    ;m-p 17sep05 added alternate-smtp-host and hostname: and log-line
    ;q 10aug06 added remote_trace style timings to send file done msg as H4
    ;r-t 21sep06 allow quotes in email address and wrap long subject lines
    ;u 13apr07 added extra-mime-headers:
    ;v12 06feb08 added hash-in-address ;2 modette for size of email list
    ;3-4 added check-primary-host for POP3 and chkmail-folder:
    ;5-6 bugette with send_smtp and logging long DA
    ;7 3sep10 added use-sx
    ;8-9 10nov10 bug in pop3 when Uidl has non-alnum
    ;10-11 19may11 bugette when TLS does not work and b64 '=' padding
    ;12 22aug13 added POP3 error message on logon/pwd and added -1 for display
    ;13-14 30sep13 added hash-in-fiphdr ;15 30apr14 file-trace
    ;16  7oct14 if -H and not -C, do not encode any mime headers in the data
    ;17-18 26jun15 make donque variable
    ;19-22 25jul16 tuning and buffersizes and better error messages
    ;23-24 3oct17 AUTH PLAIN and AUTH LOGIN now work  with new params auth-login,
auth-plain, auth-pwd
    ;25-26 3nov18 redid SSL for new defaults for ciphers and certs plus done-queue
as a parameter
    ;27 18dec18 auth-logon/pwd are now parsable plus added -e (extraFH)
    ;28-29 tuning maxFipHdr -> limit and maxTO->998
    ;30-31 26feb19 senddirect tuned ;32-33 added ssl-display
    ;34-42 redid direct and added ZSMTP_ADDMIME fiphdr and ZSMTP_CHKMIME fiphdr
    ;43 added local-domain*
    ;44-46 11dec19 added S1:(host) and socks-proxy better
    ;47 WINNT buglette strftime and locale
    ;48 14dec20 nicer error checking for streaming and added keepalive-every
    ;49 18aug21 minor for s_PIPE plus fiphdr-* and Reply-to: fields
    ;50 11mar22 added Oauth2 for Gmail
    ;51-52 29may23 thru socks timeout
    ;53 10sep23 added MSoauth2

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