Hi, An email travelling through multiple MTAs at different institutions arrives with the earlier SpamAssassin X-Spam-... header fields intact, including X-Spam-Status, but a later check adds X-Spam-... fields except for X-Spam-Status.
The later institution say this is because only one X-Spam-Status should be present so they don't add a second, or replace the first. It means I see an X-Spam-Flag: No from the later check but not the tests which hit. - Is there some documentation for me to read which says one X-Spam-Status is the maximum? - If one is the maximum, which of the assassins has their field kept? - Where is SpamAssassin's logic to handle this? I've had a look at the source — add_header, ham_headers, etc. — but don't obviously see anything which avoids adding a duplicate. -- Thanks, Ralph.
