Mail Setup

Goals

To receive spam-filtered and virus-scanned emails without fear of losing them.

Introduction

On an average day, I get between 100-200 spams on my personal email address. I used to run SpamAssassin and ClamAv on my qmail system but that has sucked a lot of processing power on the system.

The domain is question is "dready.org".

I have set it up to have 2 MX records, one to my mail server on a colo host, and a backup MX to my FreeBSD box behind my home ADSL connection.

So, I'd like to keep it that way.

1. Mail comes in to my mail server (either directly from the sending MTA, or via my backup MX)
2. To save processing power, I don't want to run any spam filtering or virus scanning software.
3. So the mail gets delivered to my Maildir, from which I can POP using Thunderbird.
4. However, this mailbox has too much spam in it. I'd really like to take advantage of GMail's processing power.
5. Did I mention that I hate sifting through the Spam folder? So, even if I could use SpamAssassin and Thunderbird's spam filter, it's not good enough because I don't want to have to go through the false positives.
6. One way of doing it would be to forward it to Gmail, and POP it back out.
7. The problem with that is - if Google incorrectly marks a message as spam, I will have to go into Gmail's Spam folder to retrieve it. That's alright.

Final Solution

primary@example.com is the primary email address that I receive mails for.
This is forwarded to temp@example.com and my.account@gmail.com
Mails on temp@example.com are kept for 30 days, but provide a way to recover Gmail false positives as well as a quick way to access fresh mails (in case gmail is down)
All mails on my.account@gmail.com is spam filtered and forwarded back to filtered@example.com.