Barry Finkel writes:

...

I am running Mailman 2.1.9. I have a list where one posting has a "Subject:" line:

 Change in Procedure for Computers on list with possible Antivirus Problems 

The next posting in the thread has:

 Change in Procedure for Computers on list with possible AntivirusProblems 

"Stephen J. Turnbull" <stephen@xemacs.org> replied:

What is happening, I guess, is that Mailman is folding that header to keep it within some number of characters, maybe 76 or so. RFC 2822 specifies that this may be done by inserting a linebreak (CRLF) before whitespace. The RFC implies that the right thing to do in that case is to remove the CRLF only, but some MUAs also remove a space. I suspect that is what is happening to this case.

Can you post a copy of the "raw" header as received by Mailman and as sent by Mailman?

I am not sure I have this information. What I see (and posted) from the list .mbox file - is that what was received by Mailman or what was sent?

Barry S. Finkel Computing and Information Systems Division Argonne National Laboratory Phone: +1 (630) 252-7277 9700 South Cass Avenue Facsimile:+1 (630) 252-4601 Building 222, Room D209 Internet: BSFinkel@anl.gov Argonne, IL 60439-4828 IBMMAIL: I1004994