Greetings
My Email Service is back!
I am particularly grateful for the contributions of Aki, Nick and n4ch0. They provided clarity. I am also noticing better performance with this new approach when compared to the old/previous approach (LDA).
It is amazing how the reputation of one's email server can drop within days of failed queries. I had to adjist Spamassassin's rules too.
Thanks a lot
Regards Onyeibo
Sent with Proton Mail secure email.
On Wednesday, December 17th, 2025 at 7:59 PM, n4ch0 via dovecot <dovecot@dovecot.org> wrote:
Thanks Aki,
I really appreciate your suggestions towards resolving the anomaly.
Aki wrote: This is unfortunate known issue, can at the moment I can recommend either using LMTP (which is greatly preferred over lda), or you can try
!try_include /etc/dovecot/ssl.conf
I have settled for the highly recommended LMTP already. It remains to pursue its setup to a logical conclusion. Do you have any idea what I omitted or misconfigured? What is preventing the handover from postfix to dovecot? Should I restore the entry for dovecot in /etc/postfix/master.cf (perhaps with an executable pointing to lmtp instead)?
-- Onyeibo
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in my experience this is enough:
Enable LMTP :
protocols = imap lmtp
Create the LMTP Unix socket:
service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { user = postfix group = postfix mode = 0600 } }
Enable required plugins for LMTP delivery:
protocol lmtp { postmaster_address = postmaster@domainname mail_plugins { quota = yes sieve = yes } }
Postfix configuration: main.cf
virtual users: virtual_transport = lmtp:unix:private/dovecot-lmtp
system users: mailbox_transport = lmtp:unix:private/dovecot-lmtp
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