Hello Dev, A reliable way to detect The Bat! is to parse the Message-ID.
The Bat! uses a special algorithm to construct it, I wrote to Malte S. Stretz about it already, and he have implemented a corresponding rule several years ago. I suggest to drop the following rule entirely __THEBAT_MUA X-Mailer =~ /The Bat!/ and only rely to the message-id to detect The Bat! -- Best regards, Maxim Masiutin mailto:[email protected]
