On 2 Apr 2019, at 23:14, James Brown wrote:
We have Stunnel receive the traffic on port 465 and 587 and forward on
to 127.0.0.1 on port 25.
That seems odd. Why?
The whole point of having submission channels distinct from port 25 SMTP
is to allow you to put different restrictions on inbound and outbound
traffic. If they are just forwarded to port 25 looking like the
loopback, you lose that capacity for nuanced access control and lose
your ability to conform to the submission standard on submission ports.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Available For Hire: https://linkedin.com/in/billcole
