smtp filter

I have a multiple delivery of the same message problem. The message successfully enters the queue, but after the postfix transfers the message to the smtp filter, the message doesn't leave the active queue. This causes the message to be sent again every time the postfix is restarted by the...

hello, I'm starting to implement Proxmox Mail Gateway and I'm having problems with the smtp filter. the pmg-smtp-filter service stops and therefore stops passing mail through the gateway. The error shown in the logs is: Apr 17 16:41:20 ubuntu systemd[1]: pmg-smtp-filter.service: Main process...