Postfix (Mail Relay) - Amavisd-new - Spamassassin - ClamAV
Thanks to these great opensource softwares, one can create a reliable anti-spam and anti-virus filter server.
I plan to create a Howto or Documentation to help others implement this on their system. This includes the iptables rules that are necessary and settings for using postfix as a mail relay to another secure server.
A quick run-through:
1) Install postfix (mail server)
- no restrictions yet
- just make sure everything is working properly as a mail relay
2) Install clamav (antivirus scanner)
- independent tests can be performed
3) Install spamassassin (antispam scanner)
- this is a simple process that testing can wait for amavisd-new
4) Install amavisd-new (makes all of them work harmoniously)
- this has a lot of perl module dependencies
- after the dependencies, installation is quite simple
- configuration will take some trial and error tests to suit your needs
Hopefully by December I would have finished the howto.
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