>>>>> "lua8ds---" == lua8ds--- via dovecot <dovecot@dovecot.org> writes:
> 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-file
> args = scheme=CRYPT username_format=%u /etc/dovecot/users
> }
> userdb {
> driver = passwd-file
> args = username_format=%u /etc/dovecot/users
> I updated to
> passdb {
> driver = passwd-file
> args = scheme=CRYPT username_format=%u /etc/dovecot/users
> }
I think you need to update both places, so that your username and
password checks are done with lowercase usernames.
> userdb {
> driver = passwd-file
> args = username_format=%Ln /etc/dovecot/users
> FYI after I updated and tested sending an email with uppercase username
> again, I ran
> # systemctl reload dovecot postfix
> also
> # dovecot reload
> What else can I try?
> I tried args = username_format=%Lu too, in vain.
> PS thanks for pointing that I should look at username_format rather than
> auth_ username_format
> # dovecot -n
> # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf
> # Pigeonhole version 0.5.7.2 ()
> # OS: Linux 5.4.0-156-generic x86_64 Trisquel GNU/Linux 10.0.1, Nabia
> # Hostname: mail.redacted_tld
> auth_mechanisms = plain login
> auth_username_format = %n
> mail_location = maildir:~/Maildir
> mail_privileged_group = mail
> namespace inbox {
> inbox = yes
> location =
> mailbox Drafts {
> auto = create
> special_use = \Drafts
> }
> mailbox Junk {
> auto = create
> autoexpunge = 30 days
> special_use = \Junk
> }
> mailbox Sent {
> special_use = \Sent
> }
> mailbox Trash {
> auto = create
> special_use = \Trash
> }
> prefix =
> }
> passdb {
> driver = pam
> }
> protocols = imap lmtp imap lmtp
> service auth {
> unix_listener /var/spool/postfix/private/auth {
> group = postfix
> mode = 0660
> user = postfix
> }
> }
> service lmtp {
> unix_listener /var/spool/postfix/private/dovecot-lmtp {
> group = postfix
> mode = 0600
> user = postfix
> }
> }
> ssl = required
> ssl_cert = </etc/letsencrypt/live/mail.redacted_tld/fullchain.pem
> ssl_client_ca_dir = /etc/ssl/certs
> ssl_dh = # hidden, use -P to show it
> ssl_key = # hidden, use -P to show it
> ssl_min_protocol = TLSv1.2
> ssl_prefer_server_ciphers = yes
> userdb {
> driver = passwd
> }
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