Difference: RisleynetMail (4 vs. 5)

Revision 52008-03-23 - RonRisley

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META TOPICPARENT name="WebHome"

electronic mail

at risleynet and hosted domains

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important changes in spam processing 23March2008

Since its inception, risleynet has maintained a laissez-faire stance toward spam filtering. Specifically, we have never discarded users' mail messages, no matter how spammy they looked. When we implemented SpamAssassin, we set it up to only add headers to messages to help users filter the messages using their email client software. (By special request, we can also quarantine suspected spam in a separate mail box.) Alas, the spam situation has worsened steadily over the years. About 90% of connections to risleynet mail servers these days are actually attempts to propagate spam.

We've been running SpamAssassin long enough now to observe that we have never, ever seen any legitimate mail garner a spam score of more than three. Indeed, for our own accounts we've been quarantining email with spam scores ≥ 3 since January 2005, without a single false positive. We have therefore changed our policy, and our mail servers will now silently delete any incoming messages with a spam score ≥ 10. This should reduce the burden of spam on all users of risleynet email.

 

history

Since 1998, email at risleynet has been served using legacy Macintoshes running Stalker Internet Mail Server (SIMS). SIMS was a great product, but not a big revenue source for Stalker. Development on it basically stopped when Apple released Mac OS X. In addition, running SIMS meant that I had to keep a server running Mac OS 9, a much less stable OS than Linux and more difficult to administer remotely. Stalker's commercial product, CommuniGate Pro, is priced beyond the means of this community-supported operation.

 
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