Did you check your certificate?
We had some time ago an issue with one sender, that looked like yours in
the logs. After changing from a self signed certificate to one from
letsencrypt the sender didn't timeout in data anymore. Our certificate
where at that time about two years over end time. :-((
Willi
Am 18.06.20 um 10:45 schrieb David Hartley:
I am running Postfix on a Synology NAS using DSM 6.2
In general I can receive emails, however I cannot receive emails
from<name>@ btinternet.com.
An example of the sender's failure report is:
Reporting-MTA: dns; sa-prd-fep-040.btmx-prd.synchronoss.net
Arrival-Date: Wed, 27 May 2020 18:31:52 +0100
Received-From-MTA: dns; sa-prd-rgout-001.btmx-prd.synchronoss.net
(10.2.38.4)
Final-Recipient: RFC822; <a...@xxxxxxx.uk>
Action: failed
Status: 4.4.7
Remote-MTA: dns; xxxxxxx.uk
Diagnostic-Code: smtp; 250 2.1.5 Ok
The Postfix log sees the BT mail server connect, but does not receive
any data:
2020-06-09T12:04:00+01:00 <myserver> postfix/smtpd[7356]: connect from
mailomta12-sa.btinternet.com[213.120.69.18]
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]
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]
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
Can anyone suggest what the problem is here please?
Is is a problem at my end, or a problem at btinternet.com?
With thanks
David
