> [EMAIL PROTECTED] emails [EMAIL PROTECTED] = 550 5.7.1 unable to > relay error ([EMAIL PROTECTED] is ms5.webminders.com)
If I've understood you correctly, you're saying that the client's server tells the client it can't relay to this remote domain, while it is allowed to relay to at least one other remote domain that happens to have its MX as the same remote host. The client's ability to relay to remote domains that are not on that host is not documented in your message. Find out what the relay permissions are on the client's box. If they don't have full relaying with an AUTHed session, that's a very complex setup on their box (more like an Intranet setup) that will need to be managed by their admin; alternately, they have blacklisted your domain in particular, which also needs to be solved on their end. -Sandy To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
