Since we are using this Filter, we are having one small issue.
When someone sends a mail, and the receiver has an auto-reply enabled, the auto reply mail gets rejected/marked as spam.
One of the reasons could be, that "From" is empty, but besides that I can not find anything wrong.
Hope you can help me out.
Kind regards,
Justin
EDIT:
Found a potential fix
Code: Select all
Try modifying the following line in /etc/MailScanner/MailScanner.conf as follows:
Treat Invalid Watermarks With No Sender as Spam = 2
These type of emails seem to get the watermark stripped from them on the remote side with some types of email servers. Setting this value below your spam threshold will treat these emails with suspicion but not automatically flag them as spam unless other triggers occur.
Don't forget to restart mailscanner...
sudo service MailScanner restart