[lug] sendmail rejecting connections

[Sexton, George]

You need to figure out what the process that are blocked are.

I once had a case where an SMB connection was hung. I was running the disk
full checker, which checks every hour for free space. The default RedHat 7.2
script did not have an option to exclude SMBFS mounts. Consequently, disk
check was hanging because of the bad SMB mount. After two days, my load
average was maxed out.



-----Original Message-----
From: lug-admin at lug.boulder.co.us [mailto:lug-admin at lug.boulder.co.us]On
Behalf Of Paul Bille
Sent: 09 August, 2002 10:29 AM
To: lug at lug.boulder.co.us
Cc: Warren Sanders
Subject: [lug] sendmail rejecting connections


Warren > . . . sendmail[919]: rejecting connections on daemon MTA: load
average: 46 . . .

Hello Warren,

Did you ever get an answer to your sendmail overload question?

I had the same experience on my mail server about the same time.  I
didn't check my mail or administer the server for a few days while on
the road in late July and again early in August.  On both occasions I
noticed that I wasn't getting any e-mail.  I checked the server and got
the same message,
"sendmail . . . rejecting . . . load average . . ."

I presumed it was because too much mail backed up in the system.  (I
know that doesn't make sense but I was rationalizing.) On both occasions
I had to re-boot the system to clear out the bogus tasks and get
sendmail to begin accepting.

I'm wondering if someone has devised an attack on sendmail.  Have you
heard anything more on this topic?

Thanks,
Paul
http://bille.cudenver.edu/author

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