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HP-UX
Sendmail not submitting Email on '.'
Post 302331949 by john_exonets on Tuesday 7th of July 2009 03:53:31 PM
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
I hope that clarifies things.
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
I hope that clarifies things.|
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LEARN ABOUT DEBIAN
sendmailconfig
SENDMAILCONFIG(8) System Manager's Manual SENDMAILCONFIG(8) NAME
sendmailconfig - configure sendmail for Debian systems SYNOPSIS
sendmailconfig [--no-reload] DESCRIPTION
sendmailconfig is used to simplify the configuration of sendmail(8) for use on Debian systems. In the simplest case, you may run this program to (re)configure sendmail for your Debian system at any time. It will modify the file /etc/mail/sendmail.mc in order to create a working sendmail configuration which will be written to the file /etc/mail/sendmail.cf. For advanced configurations, you can modify the sendmail.mc file before generating sendmail.cf. Future invokations of sendmailconfig will preserve these changes provided they are made at the end of the file. Normally sendmailconfig will ask if you want to reload sendmail after making changes to its configuration. The --no-reload option will avoid this question. FILES
/etc/mail/sendmail.mc sendmail m4 input to generate sendmail.cf /etc/mail/sendmail.cf actual sendmail configuration file /etc/mail/sendmail.cw names for which we will accept mail in the standard configuration /etc/mail/sendmail.ct names of trusted users in the standard configuration SEE ALSO
sendmail(8) AUTHOR
Robert Leslie <rob@mars.org> 21-Jan-1997 SENDMAILCONFIG(8)