Hi, I upgraded our Listserv from 1.8d to 1.8e back in July. After that, I started getting a few complaints from users saying that they are not able to post through web interface. There is no problem with posting using email though. When I tested it myself, although I got a successful confirmation on the web page, nothing got sent out or archived. There is always an error in Listserv log: Message forwarded to [log in to unmask] From [ANONYMOUS]@DOMAIN.COM: X-LOGCK <snip> -> RCPT TO:<[log in to unmask]> 550 <[log in to unmask]>: User unknown in local recipient table -> No recipient left, message aborted. There was no error logged in our mail log. When I posted to the same list [log in to unmask], using sendmail command, my post went through. I read 2003a "level set" release and did not see any mention of this. So it's not a bug. And if our Listserv or even mail configuration is incorrect, then why does it work with posting using email? Any ideas? Thanks, Tam