Jeff Makey wrote: > I stand corrected, but it seems rather arbitrary for MIMEDefang to > enforce the RFC 2822 limit on the number of Subject headers and not on > other headers (e.g., to, reply-to) that have the same limit.
The reason is historical: http://lists.roaringpenguin.com/pipermail/mimedefang/2005-September/027960.html Many people filter spam by tagging the subject of suspect messages. If there's more than one subject, then you may tag one of them but have the other displayed by the mail client. The only real options are to either tag *every* Subject: header, or remove all but one of them. I suppose it does go against the MIMEDefang philosophy of providing mechanism rather than policy to delete all but the first Subject: header... I may revisit that decision. > I'll go out on a limb again with the suggestion that no RFC > explicitly allows an MTA to remove non-compliant Subject headers If you are running MIMEDefang, you are already breaking rules about what an MTA is allowed to do. :-) But I agree; hard-coding this into MIMEDefang itself was probably wrong. I think it's better to add a helper function "action_tag_subject" that tags *all* Subject: headers so filter-writers don't need to think about possible multiple subjects. Regards, David. _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
