On 11.04.23 07:31, tom--- via Postfix-users wrote:
If I added this config in main.cf:
smtpd_helo_restrictions = permit_mynetworks,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname,
reject_unknown_helo_hostname
many email MUA such as thunderbird were delivering messages from a
dyna IP with just localhost as HELO hostname. so their messages will
be rejected by postfix.
If I changed the above configuration to:
smtpd_helo_restrictions = permit_mynetworks,
permit_sasl_authenticated,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname,
reject_unknown_helo_hostname
it seems in HELO stage permit_sasl_authenticated not happened. so
email was still rejected.
for home users and desktop clients, should I disable the helo checking
above?
do these use port 25 to submit mail or different?
These settings are usually overridden in master.cf, services submission
(port 587) or smtps/submissions (port 465).
End clients should use these ports instead of 25.
--
Matus UHLAR - fantomas, [email protected] ; http://www.fantomas.sk/
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