Information Systems Services
Information Systems & Services (ISS) - changes to mail architecture
Information Systems & Services (ISS)
Spam - Changes to mail architecture
Pre February 2004
In the scenario above mail arrived at the DCU mail server via two routes
- directly from external sources
- through one of our external mx backups
February 2004 - June 2005
In the scenario above we added a number of new layers to mail processing
- Mail Gateway
We have put in place 2 mail gateways which process all mail destined for the DCU mail server. This allows us to weed out spam before it gets to the mail server. - MX Backups
We moved away from dependency on MX Backups. - Postfix
Our postfix config is based on Jim Seymour's anti-UCE cheat sheet. - Amavisd-New
This is a high performance interface between the MTA (postfix) and virus/spam scanning. - Anti Virus
Reject any mails containing a virus (using ClamAV). - SpamAssassin
This program catches mail which it suspects to be spam.