I need to set up a box that will act as an MX backup for approximately
300 domains for companies under 100 employees.
Do you think that something like this (using postfix) is the easiest /
best way to do that?
http://www.howtoforge.com/postfix_backup_mx
Right now, I am just using DNS Made Easy's MX backup. For certain
domains, that's cool. ~$10/year gets me a two week / 1GB queue that
periodically keeps trying to deliver to my 10 mail record (according to
this schedule: http://www.dnsmadeeasy.com/s0306/res/bmq.html)
There are times, however, when a domain either (a) gets more traffic
than 1GB during downtime, (b) needs a queue longer than two weeks (not
really very likely, but still...), (c) needs "extra" services, like
ClamAV scanning on this backup mail (just in case all the AV stuff isn't
installed properly when a mail server is rebuilt), or (d) one five
person company owns like 30 domains, and it's not worth it for them to
plunk $300 for the off chance that their $10/mo mail server goes down
(which you have to plan for).
I run across this scenario that I'm willing to spend some time and roll
my own custom solution, put it out there, and then let my clients /
associates piggy back off it in a pinch.
Feedback?
