SENDMAIL LOGGING

SENDMAIL [ SYSLOG]


How does syslog determine where to send the log files for sendmail ?


catting the out put of mail in syslog in sles is shown below.


# grep -i mail /etc/syslog.conf

mail.* - /var/log/mail

mail.info - /var/log/mail.info

mail.warning - /var/log/mail.warn

mail.err - /var/log/mail.err

*.*,mail.none,news.none - /var/log/messages


Explanation:-

In general syslog entry in linux and unix servers are in the following form.

Facility.level -


Facility is mail in syslog.conf

level may be one of the 0 to 8 ie (debug-emergency)

mail.* in syslog.conf indicate that all the levels.


NOTE: debug produces more messages and enmergency produces less messages.
Debug level creates lots of disk IO.

System log setup with sendmail is each line conatain atleast two lines.

First line acknowledges the receive of the message and second lne correcsponds to the delivery attempts.



Example are gievn below.


Recieving of message from the mail user agent

Jun 2 11:42:13 pc1 sendmail[6484]: o526C9vA006484: from=root, size=6, class=0, nrcpts=1, msgid=<201006020612.o526C9vA006484@pc1.test.com>, relay=root@localhost


Jun 2 11:42:22 pc1 sm-mta[6500]: o526CD0Q006500: from=, size=262, class=0, nrcpts=1, msgid=<201006020612.o526C9vA006484@pc1.test.com>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]

Delivery of the message


Jun 2 11:42:22 pc1 sm-mta[6500]: o526CD0Q006500: to=, ctladdr= (0/0), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30262, dsn=2.0.0, stat=Sent


Jun 2 11:42:22 pc1 sendmail[6484]: o526C9vA006484: to=root, ctladdr=root (0/0), delay=00:00:13, xdelay=00:00:09, mailer=relay, pri=30006, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (o526CD0Q006500 Message accepted for delivery).