> On Jul 13, 2016, at 2:27 AM, Michael Fox <[email protected]> wrote:
>
> So, I'm thinking I need three submission ports:
> * one for AUTH but no TLS
> * one for AUTH with opportunistic TLS
> * one for AUTH with enforced TLS
You can combine these into just one service by using:
main.cf:
mua_discard_ehlo_keyword_address_maps =
cidr:${config_directory}/ehlo.cidr
master.cf:
submission inet ... smtpd
-o
smtpd_discard_ehlo_keyword_address_maps=$mua_discard_ehlo_keyword_address_maps
ehlo.cidr:
192.0.2.1/32 starttls,silent-discard
to suppress TLS for some clients, and:
main.cf:
mua_sender_restrictions =
check_client_access cidr:${config_directory}/tlsclient.cidr
master.cf:
submission inet ... smtpd
-o smtpd_sender_restrictions=$mua_sender_restrictions
tlsclient.cidr:
192.0.2.0/24 DUNNO
0.0.0.0 reject_plaintext_session
--
Viktor.
