On 28/11/2020 11:30, Juerg Reimann wrote: > Dear list members, > > Interesting phenomenon on a newly setup system: > > 2020-11-28T11:15:48+01:00 localhost postfix/lmtp[98782]: [ID 197553 > mail.info] DDB5E8456: to=<u...@domain.tld>, > relay=my.host.tld[private/dovecot-lmtp], delay=0.04, delays=0.02/0/0.01/0.01, > dsn=5.1.1, status=bounced (host my.host.tld[private/dovecot-lmtp] said: 550 > 5.1.1 <u...@domain.tld> User doesn't exist: u...@domain.tld (in reply to RCPT > TO command)) > 2020-11-28T11:16:01+01:00 localhost postfix/lmtp[98782]: [ID 197553 > mail.info] BF1678458: to=<u...@domain.tld>, relay= > my.host.tld[private/dovecot-lmtp], delay=0.26, delays=0.25/0/0/0.01, > dsn=5.1.1, status=bounced (host my.host.tld[private/dovecot-lmtp] said: 550 > 5.1.1 <u...@domain.tld> User doesn't exist: u...@domain.tld (in reply to RCPT > TO command)) > 2020-11-28T11:26:37+01:00 localhost postfix/lmtp[99560]: [ID 197553 > mail.info] BA35E88DC: to=<u...@domain.tld>, > relay=my.host.tld[private/dovecot-lmtp], delay=0.16, delays=0.08/0/0/0.08, > dsn=2.0.0, status=sent (250 2.0.0 <u...@domain.tld> YIesL90lwl+2hAEA0J78UA > Saved) > > How can I lowercase the complete email address in postfix before delivery? It > happens like this in my case: > > virtual_transport = lmtp:unix:private/dovecot-lmtp > > Thanks, > Juerg > Juerg
There is no configuration parameter to lowercase email addresses in the postfix lmtp client. You should be able to configure dovecot to accept case insensitive email addresses. It should do that by default in recent versions. I believe the parameter to look into is auth_username_format. John
