On Thu, 29 Oct 2020, Maurizio Caloro wrote:
Please i need little understanding help about setup TLS Certification. i
plan to implement
this on me farm but here i'am not 100% shure about the concept. For example
here i'am run
with a simple DNS Entry "mail.compa...@abc.ch" that will be the postmaster
for meny
company, but on the background i have meny different little domain.
[...]
If I understand you correctly you have a number of virtual domains being handled
by one single postfix instance, at your mail.server.ch, i.e. mail.server.ch is
the MX for your "little" domains.
In that case, you only need to have a SSL certificate for mail.server.ch, as
this is the server other servers will talk to when sending mail.
Note that this applies to the transport encryption, i.e. MX<->MX.
If that's not what you mean, then you'll have to explain it differently, or
other people will understand it better :)
Cheers.
