Reply to post: I run email systems for a living

The last post: Building your own mail server, part 1

gerdesj Silver badge

I run email systems for a living

A few suggestions if you want to DiY:

* You *must* have a static IP with A, MX and PTR records

* Exim for the MTA. You are welcome to try others eg Sendmail, Postfix or Qmail

* Greylisting is a great idea but it will get on your nerves after a while and is no more effective than blacklisting (sign ups to new services will be delayed by your greylist)

* Use Spamhaus, Hostkarma and co for blacklists - they are very good for an initial filter

* Spamassassin

* SPF, DKIM, DMARC - they will improve your "reputation" but be careful - they are complex beasts.

Test with this:

To really get to grips with it, from a standing start, allow at least 1 year. I'm not joking. You can get good results in a couple of hours but you will still be learning for years. I am.



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