https://www.webmaster-forums.net/crss/node/1019912 en https://www.webmaster-forums.net/server-management/socket-error-10051#comment-1121013 <p>Hi, Andy, welcome to WMF. </p> <p>Socket Error 10051 is a pretty general error. You seem to have ruled out the most obvious, ISP blocking port 25 to prevent spam relays. There really wasn't much listed for it on MS Technet. I am not familar with Imail, mostly Exchange, Sendmail and Qmail but I did find <a href="http://support.ipswitch.com/kb/WSK-19980714-EM17.htm" class="bb-url">this article</a> which seems to indicate a possible routing error.</p> Mon, 09 Dec 2002 13:24:23 +0000 mairving comment 1121013 at https://www.webmaster-forums.net