Plesk is auto forwarding emails to removed email addresses after upgrading

[Edrick]

Hi all,

I have an issue here. The user had upgraded his Plesk to 12.0.18 and there were issues to the email forwarding. For example, the user had removed this address, example1@domain.com from the mail forwarding for this email, test1@domain.com. The user had added this address example2@domain.com subsequently after removing example1@domain.com.

However, from the logs, i still see that test1@domain.com is still doing mail forwarding to example1@domain.com which is already removed and this caused the mail queue to keep increasing.

Can anybody help to explain what is happening?