On Friday 25 September 2020 12:56:50, PGNet Dev wrote: > I'm setting up an alternative submission relay host for dovecot. Atm, it's > pointing @ fastmail.com. > > with dovecot config, > > submission_relay_host = smtp.fastmail.com > submission_relay_port = 465 > submission_relay_ssl = smtps > submission_relay_ssl_verify = no > submission_relay_trusted = yes > submission_relay_user = 'acc...@mydomain.com' > submission_relay_password = 'acctPWD' > > submission relay via dovecot proxy works as expected -- mail's > delivered/received by intended recipient. > > in local dovecot logs I notice > > ==> /var/log/dovecot/dovecot.log <== > 2020-09-24 16:22:19 > submission(recipi...@example.com)<xxxxxxxxxxxxxxxx>: Warning: smtp-client: > conn smtp.fastmail.com:465 (66.111.4.140:465) [1]: Received invalid EHLO > response line: Unexpected character in EHLO keyword > > at debug level > > ==> /var/log/dovecot/dovecot-debug.log <== > 2020-09-24 16:22:19 > submission(recipi...@example.com)<xxxxxxxxxxxxxxxx>: Debug: smtp-client: conn > smtp.fastmail.com:465 (66.111.4.140:465) [1]: command EHLO: Got reply (1/1): > 250 mail.messagingengine.com PIPELINING SIZE 73000000 AUTH DIGEST-MD5 > CRAM-MD5 NTLM LOGIN PLAIN AUTH=DIGEST-MD5 CRAM-MD5 NTLM LOGIN PLAIN > ENHANCEDSTATUSCODES 8BITMIME (1 commands pending, 0 commands queued) > > it's clearly non-fatal, simply a warning. > > i certainly do _not_ see this with every relay host, so suspect it's unique > to fastmail's EHLO response. at least within the set of hosts I've tested. > > i'd like to find/fix it ... either at my dovecot instance, or @ fastmail. > > what's specifically invalid about > > 250 mail.messagingengine.com PIPELINING SIZE 73000000 AUTH DIGEST-MD5 > CRAM-MD5 NTLM LOGIN PLAIN AUTH=DIGEST-MD5 CRAM-MD5 NTLM LOGIN PLAIN > ENHANCEDSTATUSCODES 8BITMIME > > by dovecot's 'measure'?
The "=" in AUTH=PLAIN. See: https://dovecot.org/pipermail/dovecot/2020-September/119854.html $ openssl s_client -connect smtp.fastmail.com:465 ... 220 smtp.fastmail.com ESMTP ready ehlo asdf 250-smtp.fastmail.com 250-PIPELINING 250-SIZE 71000000 250-ENHANCEDSTATUSCODES 250-8BITMIME 250-AUTH PLAIN LOGIN 250 AUTH=PLAIN LOGIN Thanks, Alec
