When a sender writes my email address with my username uppercase, e.g.
usern...@name.com, in the to: field of their MUA, my mail server rejects that
email. /var/log/mail.log prints:
: host mail.redacted.com[private/dovecot-lmtp] said:
550 5.1.1
> User doesn't exist: usern...@redacted
Updating:
args = username_format=%Ln
under userdb did not fix my issue.
My server still rejects incoming emails with uppercase username e.g.
USERNAME@tld.
In /etc/dovecot/conf.d/auth-passwd-file.conf.ext, before I updated with your
suggestion i.e. %Ln, I had:
passdb {
driver = passwd
I fixed the problem I had.
My mail server no longer rejects emails I receive to my username written in
large cap e.g. usern...@domain.com.
In the file /etc/dovecot/conf.d/10-auth.conf I had:
auth_username_format = %n
I updated that line to:
auth_username_format = %Ln
which, I
