Perhaps the line `pki domain.tld key "/etc/mail/tls/smtpd.key"` should be `pki domain.tld key "/etc/smtpd/tls/smtpd.key"`? There is no mention to that directory above this line!--Xan (talk) 13:03, 8 July 2015 (UTC)
You are correct, I'm translating most of this from OpenBSD setups so occasionally a platform specific path like /etc/smtpd vs /etc/mail this gets by me.
I did correct the error. Sorry if I was supposed to mark it as 'fix it', I'm still new to using the talk page.
Which section in particular are you suggesting should be removed?
Typically tcp port 25 SMTP will need to be opened for mail server to mail server communication, and tcp port 587 Submission will need to be opened for email clients or Mail User Agents (MUAs) relaying email through the server -- Srf21c (talk) 19:42, 8 July 2015 (UTC)srf21c