mail queue problems

You switched spamfilter from rspamd to amavis under System > server config > email, this can not work as your system uses the more modern spamfilter "rspamd". Switch spamfilter back to rspamd in ISPConfig.

 

Old mails may stay there. The change will take effect for new mails only. You can try this command though to see if requeing the old mails will solve it:

Code:

postsuper -r ALL

 

The problem is you partially reconfigured the system to use amavisd but its a rspamd installation and that's why mails got stuck. When you write a new email, do you still get the same error message when sending? It might be that the errors are from the old emails only and postfix remembers that these shall be handed over to amavis, which does not exist.

Also try to send en email to yourself (send to the same email address that your email client is logged in), does it arrive in your inbox? If yes, then the mail system itself is fine. Gmail can reject emails for many reasons incl. bad IP reputation, blacklists etc.

 

Switch the spamfilter to amavis in ISPConfig under System > server config > mail, press save, change it back to rspamd and press save. To enforce a reconfiguration of the mail system. Do not restart the system while it gets reconfigured. You can also try to run:

ispconfig_update.sh --force

as root user and choose to reconfigure services during update if switching force and back the spam filter did not help.

The spamfilter is in the mail path for incoming and outgoing emails, so you can neither send nor receive until this issue is solved.

 

Ok, but that's a different issue now. So the reconfiguration worked and fixed the issue and the spam filter is okay again. Have you set up a relay host to be used by the system and what have you set up there?

 

Normally you should not set a relay host, but postfix says that there is one configured that does not work. The relayhost fields under System > server config > mail are all empty?

You have not answered my question yet about which guide you used to install the system. And did you really start from a clean and empty system?

 

Empty all relayhost fields and save the configuration.

 

Not sure what you mean. There are 2 fields starting with relayhost, they are empty by default and they should be empty on any normal mail server that is directly connected to the internet. Empty these 3 fields and press save to fix your relayhost issue.