I’m using postfix 3.1.4 and debian 9. I want to use a relay_recipients,
where the valid e-mail addresses are. The entry for my address is
firstname.lastn...@mydomain.eu (All in small letters). When I write to
firstname.l...@mydomain.eu everything works. The e-mail ends up in the
right destination.
As soon as a letter is capitalized there is a problem, for example using
"firstname.l...@mydomain.eu "
--mail log--
postfix/smtpd[22460]: NOQUEUE: reject: RCPT from mypc.domain.eu
[192.168.1.55]: 450 4.1.1 < firstname.l...@mydomain.eu >: Recipient
address rejected: unverified address: Addresslookup failed.
--mail log--
Should not the uppercase and lowercase be the same?
regards
joed