We haven't received emails from ours web domains few days ago
 

Hi. We have few own web shops on our server. We didn't receive any emails and orders from these web shops few days ago. I tried to send emails to this email domains but we haven't received them. I installed grey list and setted all mail domains to white list but it didn't help. My server's administrator had a same problem with other server and they finally changed to ISPCONFIG 3. I wouldn't like change to other platform.

What is the problem?

Hello, please check email server log files