Hello all,

I am working on some strange sendmail behaviour.

It's sendmail 8.11.3 based on SuSE Linux.


Within my sendmail.cf file, I've configured the timeout options:

[...]
# timeouts (many of these)
#O Timeout.initial=5m
#O Timeout.connect=5m
O Timeout.iconnect=30s
#O Timeout.helo=5m
#O Timeout.mail=10m
#O Timeout.rcpt=1h
#O Timeout.datainit=5m
#O Timeout.datablock=1h
#O Timeout.datafinal=1h
#O Timeout.rset=5m
#O Timeout.quit=2m
#O Timeout.misc=2m
#O Timeout.command=1h
O Timeout.ident=0s
#O Timeout.fileopen=60s
#O Timeout.control=2m
O Timeout.queuereturn=5d
#O Timeout.queuereturn.normal=5d
#O Timeout.queuereturn.urgent=2d
#O Timeout.queuereturn.non-urgent=7d
#O Timeout.queuewarn=4h
O Timeout.queuewarn.normal=4h
O Timeout.queuewarn.urgent=1h
O Timeout.queuewarn.non-urgent=4h
#O Timeout.hoststatus=30m
#O Timeout.resolver.retrans=5s
#O Timeout.resolver.retrans.first=5s
#O Timeout.resolver.retrans.normal=5s
#O Timeout.resolver.retry=4
#O Timeout.resolver.retry.first=4
#O Timeout.resolver.retry.normal=4

[...]

E.g. the timeoute "O Timeout.queuewarn.normal=4h", which should inform the user about temporarily undeliverable mails, is not working.

No warning messages is beeing process to the user. Even the O Timeout.queuereturn=5d is not working, too. There's also no retrun message to the user, when the mail is undeliverable for 5 days.

It's really strange, because it's just the default sendmail.cf we are running.

My sendmail is beeing started due to a startup script with options:
SENDMAIL_ARGS="-bd -q30m -om

For troubleshooting purpose, I run the command
sendmail -v -qIj8G7imS24641, which at once sends the warning message of the undeliverable mail back to the user.

But I do not understand, what could be wrong.

Many thanks for you about all ideas !.

Best Regards
Marco Lehmann