[ziffusion]

I am trying iRedMail to self host an email server. What do you use?

I've setup SPF, DKIM and DMARC. The PTR record is not possible for me to setup. How did you get around that? Did you get a static IP address?

What else do you think is necessary to make this better?

[ryandrake]

My stack is exim4, dovecot, and spamassassin, running on Debian stable. I do have a static IP address as the machine is a VPS. Admittedly this makes me reliant on my VPS provider so technically the whole stack isn’t in my control. I can however in theory fail over to metal on my residential IP if my VPS fails, although 1. I would want to request a static IP from my ISP and 2. I have not tested this transition recently.

At one point in the past I needed to get a different IP address and suddenly had deliverability problems because the IP I got from the VPS provider was previously naughty. Re-requesting another IP was all it took to solve that.