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Operating Systems HP-UX Sendmail not submitting Email on '.' Post 302331949 by john_exonets on Tuesday 7th of July 2009 03:53:31 PM
Old 07-07-2009
"there is no direct connection to hold open." ...Huh? I guess it depends on how you define things. If your Email server is going to transfer an Email to my Email server, it opens a TCP connection to port 25 on my server and using the SMTP protocol, holds that connection open until my server either closes the connection or yours does.

In this particular case, your server starts the process (I.E. MAIL FROM:... RCPT TO: ... DATA ...) but when you send the '.' on its own line to signal the end of the message, my server does nothing like its thinking the '.' is still part of the 'DATA' segment. Since your server thinks its already sent the message, its waiting to see the '250 OK' message back from my server, but my server is still accepting input for some reason. One side or the other times out and closes the connection. My server aborts the message and never sends it on. Your server (may) think its successfully sent the message and deletes it. Big problem for me Smilie I hope that clarifies things.
 

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SENSIBLE-MDA(8) 					      System Manager's Manual						   SENSIBLE-MDA(8)

NAME
sensible-mda - a generic local MDA router for Debian systems SYNOPSIS
sensible-mda from to detail client-addr DESCRIPTION
sensible-mda is used to simplify the installation and configuration of sendmail(8) , or other MTAs for use on Debian systems. With sensi- ble-mda, sendmail can support a plethora of MDAs (procmail, maildrop, deliver, etc.) without having pick any one of them as required. FUNCTION
sensible-mda is called by sendmail as a local mailer when the following exists in sendmail.mc: define(`LOCAL_MAILER_ARGS', `sensible-mda $g $u $h ${client_addr}')dnl sensible-mda will look for the following MDAs (in this order), and pass the mail on to the first SUID MDA found (Or first found MDA, if run w/euid=root): procmail(1), maildrop(1), deliver(8), mail.local(8) OPTIONS
Available command line options are the following: from The sender of this email (sendmail $g variable) to The recipient of this email (sendmail $u variable) detail The detail portion of the recipient userid (sendmail $h variable) - ie: cowboy+sendmail@debian.org client-addr TCP/IP address of the sender (sendmail ${client_addr} variable) Not used (for the nonce) FILES
/etc/mail/sendmail.mc sendmail m4 input to generate sendmail.cf /etc/mail/sendmail.cf actual sendmail configuration file (treated as a binary file) SEE ALSO
sendmail(8), procmail(1), maildrop(1), deliver(8), mail.local(8) BUGS
None known so far. AUTHOR
Richard Nelson <cowboy@debian.org> HISTORY
4th Berkeley Distribution October 21 1999 SENSIBLE-MDA(8)
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