On Thu, Jun 18, 2020 at 04:25:40PM +0200, wilfried.es...@essignetz.de wrote:
> Did you check your certificate?
That's clearly not the issue. Random guesses are not helpful.
> > Final-Recipient: RFC822; <a...@xxxxxxx.uk>
> > Action: failed
> > Status: 4.4.7
The message expired after multiple retries failed to deliver it.
> > Remote-MTA: dns; xxxxxxx.uk
> > Diagnostic-Code: smtp; 250 2.1.5 Ok
This is only an error if it is a response to initial "DATA" command, for
which the expected response is "354 ...". Which somewhat suggests a
PIPELINING issue.
> > 2020-06-09T12:04:01+01:00 <myserver> postfix/smtpd[7356]: Anonymous TLS
> > connection established from mailomta12-sa.btinternet.com[213.120.69.18]:
> > TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
> > 2020-06-09T12:04:01+01:00 <myserver> postfix/smtpd[7356]: A33018C5A8C:
> > client=mailomta12-sa.btinternet.com[213.120.69.18]
After STARTTLS, the client sent "MAIL", "RCPT" and "DATA", with the
connection lost at that point. Therefore, no handshake issues can
be ruled out.
> > 2020-06-09T12:09:01+01:00 <myserver> postfix/smtpd[7356]: timeout after
> > DATA (0 bytes) from mailomta12-sa.btinternet.com[213.120.69.18]
The connection timed out no data was received for 5 minutes (default
smtpd_timeout).
> > 2020-06-09T12:09:02+01:00 <myserver> postfix/smtpd[7356]: disconnect
> > from mailomta12-sa.btinternet.com[213.120.69.18] ehlo=2 starttls=1
> > mail=1 rcpt=1 data=0/1 commands=5/6
See above.
> > Can anyone suggest what the problem is here please?
$ posttls-finger sharproad.uk
posttls-finger: Connected to sharproad.uk[88.97.109.65]:25
posttls-finger: < 220 sharproad.uk ESMTP Postfix
posttls-finger: > EHLO amnesiac.example
posttls-finger: < 250-sharproad.uk
posttls-finger: < 250-PIPELINING
posttls-finger: < 250-SIZE 10485760
posttls-finger: < 250-ETRN
posttls-finger: < 250-STARTTLS
posttls-finger: < 250-AUTH PLAIN LOGIN
posttls-finger: < 250-AUTH=PLAIN LOGIN
posttls-finger: < 250-ENHANCEDSTATUSCODES
posttls-finger: < 250-8BITMIME
posttls-finger: < 250 DSN
posttls-finger: > STARTTLS
posttls-finger: < 220 2.0.0 Ready to start TLS
posttls-finger: sharproad.uk[88.97.109.65]:25: Matched subjectAltName:
sharproad.uk
posttls-finger: [...]
posttls-finger: Untrusted TLS connection established to
sharproad.uk[88.97.109.65]:25: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384
(256/256 bits)
posttls-finger: > EHLO amnesiac.example
posttls-finger: < 250-sharproad.uk
posttls-finger: < 250-PIPELINING
posttls-finger: < 250-SIZE 10485760
posttls-finger: < 250-ETRN
posttls-finger: < 250-AUTH PLAIN LOGIN
posttls-finger: < 250-AUTH=PLAIN LOGIN
posttls-finger: < 250-ENHANCEDSTATUSCODES
posttls-finger: < 250-8BITMIME
posttls-finger: < 250 DSN
posttls-finger: > QUIT
posttls-finger: < 221 2.0.0 Bye
ESMTP and STARTTLS work.
> > Is is a problem at my end, or a problem at btinternet.com?
To get more info, try "debug_peer_list = 213.120.69.0/25", and
wait for or solicit more email from BT.
--
Viktor.
P.S. Added an explicit "Bcc:" to the OP, to record a delivery in my
logs, assuming that's the right domain/server, ...
