Viktor Dukhovni <postfix-us...@dukhovni.org> writes: >> On Feb 2, 2018, at 12:39 AM, Olivier <olivier.nic...@cs.ait.ac.th> wrote: >> >>> You've also not explained what you mean by deleting and recreating the >>> account. >> >> I am not a Mac user, but from the Mail app, select Files/Account and >> remove the account that makes problem and recreate it the same. > > Right, so this is a client-side change, which helps the Mac forget > whatever wrong settings it had before. Perhaps an incorrect SASL > setting, or an incorrect port number. > >>> The only random guess that comes to mind is your SASL library may now >>> claims to support OAUTH, but really does not. Apple's Mail.app tends >>> to be fond of that particular SASL mechanism. Of course without logs >>> that's just crazy wild speculation. >> >> Thank you, >> >> Olivier >> >> A failing connection:AMTP authentication: >> Jan 29 16:44:57 fbsd63 postfix/smtpd[93113]: connect from >> unknown[118.174.201.202] >> Jan 29 16:44:57 fbsd63 postfix/smtpd[93113]: Anonymous TLS connection >> established from unknown[118.174.201.202]: TLSv1.2 with cipher >> ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits) >> Jan 29 16:44:59 fbsd63 postfix/smtpd[93113]: warning: >> unknown[118.174.201.202]: SASL PLAIN authentication failed: >> Jan 29 16:45:05 fbsd63 postfix/smtpd[93113]: warning: >> unknown[118.174.201.202]: SASL PLAIN authentication failed: >> Jan 29 16:45:11 fbsd63 postfix/smtpd[93113]: warning: >> unknown[118.174.201.202]: SASL PLAIN authentication failed: >> Jan 29 16:45:21 fbsd63 postfix/smtpd[93113]: warning: >> unknown[118.174.201.202]: SASL PLAIN authentication failed: Connection lost >> to authentication server >> Jan 29 16:45:21 fbsd63 postfix/smtpd[93113]: disconnect from >> unknown[118.174.201.202] ehlo=2 starttls=1 auth=0/4 quit=1 commands=4/8 > > Is this the submission service on port 587, or inbound mail on > port 25?
Port 25 used for submission. >> A successful SMTP authentication with same credentionls but from a >> different Mac: >> >> Jan 30 17:52:38 fbsd63 postfix/smtpd[15674]: connect from >> Mac-4.desktops.cs.ait.ac.th[192.41.170.243] >> Jan 30 17:52:38 fbsd63 postfix/smtpd[15674]: Anonymous TLS connection >> established from mac-4.desktops.cs.ait.ac.th[192.41.170.243]: TLSv1.2 with >> cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits) > > Ditto, and you don't show the rest of the session, where's see an > actual login mechanism... Feb 6 12:59:22 fbsd63 postfix/smtpd[67160]: connect from Mac-4.desktops.cs.ait.ac.th[192.41.170.149] Feb 6 12:59:22 fbsd63 postfix/smtpd[67160]: NOQUEUE: filter: RCPT from Mac-4.desktops.cs.ait.ac.th[192.41.170.149]: <Mac-4.desktops.cs.ait.ac.th[192.41.170.149]>: Client host triggers FILTER smtp-amavis:[127.0.0.1]:10026; from=<pen...@cs.ait.ac.th> to=<o...@cs.ait.ac.th> proto=ESMTP helo=<mac-4.desktops.cs.ait.ac.th> Feb 6 12:59:22 fbsd63 postfix/smtpd[67160]: 4488C61F81: client=Mac-4.desktops.cs.ait.ac.th[192.41.170.149], sasl_method=PLAIN, sasl_username=pensri Feb 6 13:00:22 fbsd63 postfix/smtpd[67160]: disconnect from Mac-4.desktops.cs.ait.ac.th[192.41.170.149] ehlo=2 starttls=1 auth=1 mail=1 rcpt=1 data=1 quit=1 commands=8 Thank you, Olivier --
