MS Outlook and YahooGroups

Yesterday I got a message in a YahooGroups mailing list from a friend -- let's call him Pete.

Pete's message began

ON BEHALF OF DAVE

I immediately wondered why Pete was writing on behalf of Dave.

Had Dave's computer crashed?

Or, worse, had he been taken ill, had an accident, been kidnapped or arrested?

So I asked Pete why he was writing on Dave's behalf, and was Dave OK, and he said he wasn't writing on Dave's behalf at all -- the computer had put that phrase in automatically. He assumed that it was something done by YahooGroups.

I'm a member of several YahooGroups mailing lists, and I've belonged to some for years, and I've never seen it put in anything that before.

I asked Pete what mail reader he was using, and he said he was using MS Outlook.

I was aware that many Outlook users have problems in participating in mailing lists because of Outlooks deficient quoting system. I know that many of them have solved these problems by using Quotefix

http://home.in.tum.de/~jain/software/outlook-quotefix/

and I recommended Quotefix to Pete.

But none of those who have had quoting problems with Outlook have mentioned this particular problem -- of some software, somewhere along the line, inserting text to the effect that the poster of a message was writing on behalf of someone else.

Perhaps some prankster has hacked the YahooGroups list server,

But whatever the cause may be, has anyone else had similar problems when using Outlook as a mailing list reader, whether with the YahooGroups or any other listserv?

Is it a problem with Outlook, or with the server, or with both?

And if you have found a solution, please let me know, so I can tell Pete.