[Mailman-Users] List messages showing as attachments

[Lindsay Graham]

I hope this is the right place to ask this question -- if not, please 
direct me to the right place.

I'm a subscriber to 2 Mailman lists, Ger-Poland-Volhynia list at 
sggee.org and TSS list at surname-society.org.  I joined the former 
(with Individual messages) several years ago and it has always worked as 
expected.

The TSS list is new and, as a member of TSS (The Surname Society), I was 
subscribed automatically to Digest mode, but very soon switched to 
Individual mode.  All email messages that come from the list (both 
Digest and Individual) are blank except for the list footer and the real 
message is an attachment to that blank message.  I always have to open 
that attachment to read the message but to reply, I have to reply to the 
blank message.  It's my impression that very few other TSS list 
subscribers receive their messages in this way, and I've not so far been 
able to get any explanation form the TSS webmaster.

I've checked the Mailman subscription options for both lists and the 
settings appear to be identical.  My email client is Thunderbird 31.7 
(not quite the latest version) running under Windows 8.1 64-bit.  The 
problem with the TSS list exists whether I view the email in Thunderbird 
or my ISP's webmail.

If anybody has any clues why the TSS messages should appear in this way, 
I'd be very grateful for your help/advice.

Lindsay Graham
Canberra, Australia