Okay, thanks to everyone who replied. I agree that some AOL messages are getting through okay, but the only ones which are failing are AOL, which is why I suspected them in the first place. The colon idea looks like a good lead, I shall investigate my templates and see if there is anything in them with this stray colon. Thanks again Duncan -----Original Message----- From: Francoise Becker [mailto:[log in to unmask]] Sent: 10 November 2000 00:06 To: [log in to unmask] Subject: Re: AOL - again On 9 Nov 00, at 16:45, Paul Karagianis <[log in to unmask]> wrote: > > Then you obviously don't know how to do it wrong ;-) I have truckloads of > AOL'ers on SJU's system who get along just fine. What I see is a daily > trickle of blown "subscribe" commands that got to Listserv OK, but the > internal RFC822 "To:" is [log in to unmask]: with the trailing > colon. One of my owners explained this as them using some utility that > built the subscribe request for them based on some message they extracted > from Listserv. But I forget the details. Just a conjecture, but I bet that somewhere there are instructions that say something along the lines of: To subscribe to this list, send the following message to [log in to unmask]: SUBSCRIBE listname your name Perhaps AOL's mail software is picking up the ":" when they double- click on the address or perhaps people are cutting and pasting the address and picking up the colon when they do so. Francoise