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Block email spam

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by tri

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I have a linux server that run email server of SMTP. And I have couple domain email account. And they using the spam email. And no some other account don 't want it. How can I block email spam. Or monitor which account use email spam, so I can warning that account. Any ideal that can help em.

Thank you

5 replies

by timthetoolman

Hi,

Unfortunately I dont know which email server you're running but almost all of them allow for logging of messages sent. You need to find this and enable it.

BUT.... the easiest thing to do is get agreement from management that spamming is strictly against company policy and publicise this to everyone.

Also let them know that you'll be monitoring sent messages and anyone caught spamming will be dealt with harshly by management.

This alone should put most people off doing it.

Hope this helps,
Cheers,
Tim.

by maxwell edison

This is one of the better anti-spam informational sites I've seen:

"Tools and techniques for limiting spam"

http://spam.abuse.net/tools/#block

(REMOVE SPACES from the pasted URL.)

An excerpt from one small section:

"...Fortunately, blocking mailed spams is getting easier - see CIAC bulletin I-005. You can do one of two different things. The first is straightforward and works well for all but the biggest sites. This is to block access to your SMTP port so it can't be used to inject spam (several MTAs (sendmail, exim and qmail) can make use of the Mail Abuse Protection System's Realtime Blackhole List to block SPAM domains -- see usage instructions. The other thing you do is to block spams from traversing your system. This is more difficult because older mailers don't give you a good way to look at the originating address. The Transport Security Initiative is also part of the MAPS project..."

"...This page contains pointers to other pages, both on this server and on other servers. See also the abuse.net spam tools mailing list. The links are arranged into groups, whence you can warp using the following pointers..."

Some of the links it provides:

- Techniques to block SPAM

- Tools for SPAM cancelling

- Tools for SPAM reporting

- Tools for tracing SPAMs

- Documentation on SPAM tools

- Techniques to hide addresses from SPAMers

- Email Filter Services

- Misc (new / unsorted / unknown)

Check it out. I'm sure you'll find it helpful.

Best of luck and have a GREAT 2002!

Maxwell

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