Le 15/08/2023 à 23:12, Viktor Dukhovni via Postfix-users a écrit :
On Tue, Aug 15, 2023 at 04:14:58PM -0400, pgnd via Postfix-users wrote:
2023-08-14T13:11:53.782611-04:00 svr01 postfix/postscreen[27910]: CONNECT from
[52.101.56.17]:32607 to [209.123.234.54]:25
2023-08-14T13:11:59.860098-04:00 svr01 postfix/postscreen[27910]: PASS NEW
[52.101.56.17]:32607
2023-08-14T13:12:00.058029-04:00 svr01
postfix/postscreen-internal/smtpd[27907]: connect from
mail-eastus2azon11020017.outbound.protection.outlook.com[52.101.56.17]
2023-08-14T13:12:00.118201-04:00 svr01
postfix/postscreen-internal/smtpd[27907]: Anonymous TLS connection established
from mail-eastus2azon11020017.outbound.protection.outlook.com[52.101.56.17]:
TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)
2023-08-14T13:12:00.131049-04:00 svr01
postfix/postscreen-internal/smtpd[27907]: disconnect from
mail-eastus2azon11020017.outbound.protection.outlook.com[52.101.56.17] ehlo=1
starttls=1 quit=1 commands=3
Perhaps they don't like your certificate and disconnect once the
handshake completes.
I second that.
But as outbound policy could be personalized by client/tenant hosted on
O365 you're lost until someone start winning at you by another channel
or retract the offending specific configuration, all conditioned by logs
inspections and/or end user complains on their side.
Already run into here.
Emmanuel.
_______________________________________________
Postfix-users mailing list -- postfix-users@postfix.org
To unsubscribe send an email to postfix-users-le...@postfix.org
