Hello again, We have recently ported a lot of lists into a new listserv setup and a lot of the subscribers/owners were registered under older style addresses. e.g. We have several people registered as being @newcastle who are now @ncl.ac.uk and similar problems with reading.ac.uk rdg.ac.uk and edinburgh plus others. obviously when listserv attempts to verify commands or mails to lists it checks the sender of the command against it's list of known allowed addresses and finds these domains have changed and thus rejects the command/post. What I want to know is, is there any way to automate the equivalencies ?, I mean can we tell listserv that reading.ac.uk and rdg.ac.uk are the same thing ??? Cheers Duncan