On Tue, 17 Nov 2015 13:29:30 +0000, Eran Sandler wrote: ...
Would serving port 25 also require a MX record in DNS, or do webiron and others send mail direct to the relay regardless of MX records?
It will require an MX record.
Not as far as I know. When there is no MX record on mynode.torexitnode.net the A record on it will be used as the address of the SMTP server for that domain.
Or did that change some time this millenium?
Andreas