Tag: spam

Advanced spam filtering – spamassassin myql user preferences

I’ve recently changed the config of my spamassassin and just now noticed that the SPAM folder in my inbox is empty. So what has happened? When changing the config of spamassassin from file to database I only did the half thing. So spamassassin/amavis got stuck with a mixed config and did the default thing: delete spam immediatly. Although I don’t have missed a mail (at least I don’t know of any mail I missed) I prefer having spam mails put in the spam box over deleting them.
So here is the whole thing which I found at http://technology.mattrude.com:

This is a post from my old blog http://tech.cbjck.de. It has been moved here and slightly edited for better readability. It's also been adjusted to the new layout.
The content however is old and might be outdated.

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DKIM with amavis and postfix

DKIM (DomainKeys Identified Mail) is a mechanism to sign emails cryptographically. It can be used to ensure an email was really sent by the domain it claims to come from. Therefore it is an interesting feature in spam checking.

In this post I’m going to describe how I set up DKIM with amavis to sign all outgoing messages with the key of my domain. This works well in my setup with postfix, dovecot and amavis (amavisd-new), for your own setup you might have to change some things.

This is a post from my old blog http://tech.cbjck.de. It has been moved here and slightly edited for better readability. It's also been adjusted to the new layout.
The content however is old and might be outdated.

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Fighting spam

As my mailserver setup included just a avery basic spamassassin configuration far too many spam mails could get throuh. Although approximatly 95% could be banned I wanted to try improving my setup:

This is a post from my old blog http://tech.cbjck.de. It has been moved here and slightly edited for better readability. It's also been adjusted to the new layout.
The content however is old and might be outdated.

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Mailserver with ldap tutorial – part 5: virus and spam protection

After I’ve described how to set up and test a mailserver with openldap, postfix and dovecot it still needs some basic filters for virus and spam protection.

This is a post from my old blog http://tech.cbjck.de. It has been moved here and slightly edited for better readability. It's also been adjusted to the new layout.
The content however is old and might be outdated.

Read More