we have trouble with some mails from outlook.com domains.
After few weeks with many trouble with cutoumers i am disable greylisting on my efa4 server.
Now we have complaints that the messages will not be delivered.
The only message on the server is:
Code: Select all
Jun 26 13:38:35 server postfix/smtpd[25403]: 49tZdl6Svjz9yvBS: client=xxx.outbound.protection.outlook.com[40.107.7.81]
Jun 26 13:43:36 server postfix/smtpd[25403]: timeout after BDAT (17968 bytes) from xxx.outbound.protection.outlook.com[40.107.7.81]
Jun 26 13:43:36 server postfix/smtpd[25403]: disconnect from xxx.outbound.protection.outlook.com[40.107.7.81] ehlo=2 starttls=1 mail=1 rcpt=1 bdat=2 commands=7
Where can i search for this error?
Hope, anyone can help me.
Regards
Stefan