I have some lists which have a List-Id with a dot (e.g. A.List). LISTSERV sets the to-field to Multiple recipients of A.LIST <A.LIST@...> Now this is not correct, methinks; MailBook complains about a spurious "." in the phrase and worse some clients refuse to process the mail. Didn't find it mentioned in the 1.8c notes so I'm not sure whether this is a bug at all (because I think then it would already have been reported and fixed), an error on my side (because a dot is not permitted in a List-Id) or and error on the client-side (because they mis-interpret RFC822). Christian