My server (a raq4) suddenly stopped sending email from my domein.
It just queue all mail i send trough sendmail or SMTP.
I did a tail -f maillog and noticed the following lines:


sendmail[2781]: NOQUEUE: localhost [127.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA


and also:


sendmail[1960]: g4A8l8n01958: to=adressed@somedomain.com, ctladdr=sales (111/100), delay=00:04:33, xdelay=00:04:33, mailer=esmtp, pri=32470, relay=mx2.wanadoo.nl. [194.134.35.135], dsn=4.0.0, stat=Deferred: 451 <sales@admin.mydomain.com>... Sender domain must resolve


So i restarted the server:
and then saw


4: fl=0x2, mode=140777: SOCK [0.0.0.0]/1115->(Bad file descriptor)


I don't know if any of these lines are related to my problem, but i hope someone can make something out of it.

Thanks in advance !

It solved itself after a few hours.
Still wonder what it couldhave been though

sendmail :stickout

the problem might be a bit above the last part of maillog you pasted here.

:eek:

The problem is back today, mail has been down all day :(

When i type sendmail restart I get "user unknown".

stop/start has the same effect.
Any suggestions ?

I would suggest you examine the mail que. Sometimes the que gets cloged and a mess occurs. Try to force delivery on as many of those cloged messages as you can and clear the que up and try again.

i discoverd directories q1, q2, q3, q4 wich contained messages adressed to me.
I deleted them and after that i started working again, i could have been a coincidence.