For three days my SMTP proxy became mad. Half of my emails were rejected with no good reasons. I have had to stop the SMTP proxy and to go for DNAT rules to manage my SMTP.
I enclosed some logs. I tried many things, stopping greylisting, stopping verify sender to stop the RCTP to refuse the emails but nothing worked. I also have the problem with expression filter and there I stopped the content filter but it did not work as well. Plus I have a server with a good DNS and the Astaro says all the time that it has no host name for the address of the server. I don't know if this is linked but I had to stop everything to get the emails properly.
Thanks for your help.
This thread was automatically locked due to age.
