On 3 Apr 2019, at 11:11, Giles Coochey wrote:
Yet further off-topic, I have
FEATURE(`accept_unresolvable_domains')
Configured for sendmail - but suspect that sendmail still doesn't
relay if the domain is unresolvable.
Yes, it will, if it will relay for (or deliver locally) the recipient
domain. That's what accept_unresolvable_domains does. It's a generally
bad idea.
However, even after you fix that you should also have
reject_unknown_sender_domain in your smtpd_sender_restrictions list (or
a later restriction list) in Postfix and set unknown_address_reject_code
= 553. It is just as generally a bad idea to accept bogus senders in
Postfix as it is in Sendmail.
--
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
