SCOUG-Programming Mailing List Archives

Date:	Mon, 24 May 2004 00:17:29 PDT7
From:	Peter Skye <pskye@peterskye.com >
Reply-To:	scoug-programming@scoug.com
To:	scoug-programming@scoug.com
Subject:	SCOUG-Programming: SCOUG Mail Server - specs

Content Type: text/plain

A new spec for the new mail server.

At about 5 p.m. on Sunday the mail server was hit by a huge number of
spammers. There were about 40 different SMTP connections from different
IP addresses according to my last log entry. At that point something
froze, I can't tell exactly what. One of the log entries says that
InetMail ran out of sockets (the info didn't say whether InetMail ran
out of internal space for its socket list or couldn't allocate another
socket).

When I checked the system about a half hour ago using telnet I was able
to log in, so the system itself wasn't frozen.

NEW MAIL SERVER SPEC: The new mail server needs to be able to either
limit the number of simultaneous SMTP connections or have some kind of
graceful recovery if it "runs out of sockets". One reason for capping
the number of connections is bandwidth -- we're using Sundial's DSL
line, and 40 simultaneous spammer connections certainly doesn't leave
much bandwidth for Sundial's customers.

- Peter

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