Hi all,
Well, after removing IPF and having a week of stability, we decided to put
our mail server to the test.
I began flooding it with tons of mail messages using smtp-source at about
2 pm today. The server load jumped up to about 4.50 average. It
eventually started denying requests, but after waiting a few minutes, it
would accept them again (I was literally flooding it, I sent in all 1.2
million emails).
I wrote a scipt to hammer it, so even after it would refuse the
connection, it would hammer it again. Eventually, the machine started to
not respond. I could ping it with successful replies, but could not SSH
into it. The last message on the screen was "Could not write to
/var/mail/thissucks", which was the account we were testing.
I rebooted the machine, and all is fine. I'm not sure if this is still a
sign of instability, or if this is a "Any idiot who would sent 1.2 million
emails and a full flood for hours to a mail server should expect something
like this to happen" message.
Any input?
Thanks!
-Matt
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