PGNd wrote:
The LHLO/LMTP header still is added at the backend, and UNPARSEABLE_RELAY still hits. I've not yet determined what the actual problem with the parsing is.
It's a shortcoming/bug in the SpamAssassin ad-hoc parser. Please open a Bugzilla ticket and provide a sample of your Received header field (which is perfectly valid according to RFC 5321). Mark