2003-07-19: 20:12 UTC     Greylisting

Greylisting is now available as an MX restriction. Greylisting is very effective at blocking spam from compromised Windows machines.

2003-07-15: 04:00 UTC     Masqerading MX restriction

We are now rejecting email from servers that attempt to masquerade as a server in any domain that our servers handle email for. This restriction will become a user selectable option on a per domain basis. This is a very effective restriction with zero false positives.

2003-07-14: 04:00 UTC     Real Networks spam

Real Networks domains removed from the global allow list for spamming honeypot addresses in a Chinese character set no less

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