I am a digest subscriber so I am getting the replies to my postings from the mail archives web page. Apologies for the resultant disjointedness.
This comment put me on the right track: On: Mon, 02 Jun 2014 17:09:01 GMT, John Hardin <jhar...@impsec.org> wrote > Your message headers are badly damaged, or there is a blank line > at the beginning of the message as passed to SA. I was copying the problem messages from Squirellmail's 'display message details' option which I discover is not quite the same thing as copying the original message file from the mail store. However, getting messages from a cyrus imap mail store housed on a remote server is not the easiest thing in the world so I was hoping for a shortcut. Ah well, live and learn. So, now that I am passing the proper file format spamassassin -t is working as I expected for the test messages I am generating. However, returning to the original message that prompted this enquiry I have pasted the original message headers extracted from the actual email message file at: http://pastebin.com/QitggvSS This message had, as far as I can tell, a valid From: header and it passed through Spamassassin via Amavisd directly from Postfix. Nonetheless, it has a MISSING_FROM tag. Thank you for your assistance. Any further help in explaining this situation to me will is most welcome. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3