Linked by Jon Jensen on Tue 26th Aug 2008 02:53 UTC, submitted by Ryan Masters
Internet & Networking The Book of IMAP: Building a Mail Server with Courier and Cyrus, by Peer Heinlein and Peer Hartleben, is a quality resource for any serious mail administrator. The approach taken is direct, but at the same time it's very expansive, setting this book apart from most others I have read. It's packed full of rich examples which are used to solidify the topic being covered. At several places the authors reach out to explain when the subject is addressing ambiguous or otherwise undocumented information which is to great advantage to the reader and worthy of recognition.
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Liquidator
Member since:
2007-03-04

I am not sure whether you know what you are talking about.


No comment.

Back to topic. I think the problem you're exposing is that IMAP servers work with *files*. Obviously, email servers would cripple if they had to zip individual small files. And they already cripple just retrieving individual messages. How many times do we get timeout error messages from Squirrelmail when we have too many messages in an IMAP folder? The solution is retrieving relevant messages from a *database*, storing them into a temporary file (single file), zipping this file and sending it to the MUA. This would solve our problem and servers would be happy.

Reply Parent Score: 1

unoengborg Member since:
2005-07-06

There already are imap servers that use databases,
one of them is archiveopteryx http://www.archiveopteryx.org/

It uses Postgresql for backend storage, this means that you can make use of the extremly quick Postgresql full text search engine to search your mail.

Reply Parent Score: 6

Liquidator Member since:
2007-03-04

The database is only used for backend storage. DBMail works this way for instance. But the client-server communication doesn't benefit from it.

Reply Parent Score: 2