Brain Goo

How to set up virtual email domains and users with POP access on Debian Sarge
http://www.randomsequence.com/articles/smtp-pop3-email-for-virtual-users-on-debian-sarge/
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The Exim SMTP Mail Server
Exim: The Mail Transfer Agent
The Exim SMTP Mail Server: Official Guide for Release 4

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How to set up virtual domain hosting in Postfix.
http://www.postfix.org/VIRTUAL_README.html

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It’s easy to set up a shared calendar system with free software that scales well for a few users (great for a home network) and has tons of support from third parties.
What you need:

iCal client like Sunbird or Lightning from Mozilla
Apache web server with WebDav installed

How to do it:

Install WebDav and password protect a public [...]

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