SMTP Socket Error 10051
Problem/Error: You are receiving one of the following error when
"Unable to connect to the server. (Account:'account', SMTP
Server: 'mail.yourdomain.com', Error Number: '0x800ccc0e')."
The connection to the server has failed. Account
Server: 'mail.yourdomain.com', Protocol: SMTP, Port:25,
Secure(SSL): No, Socket
Error: 10051, Error Number: 0x800CCC0E.
Could not connect to "mail.yourdomain.com" cause:network
is unreachable (10051)
Answer/Solution: Some ISP's prevent their users from
accessing "outside" SMTP servers using conventional e-mail
programs like Outlook, Outlook Express, Eudora, Netscape.
To verify that your ISP is blocking SMTP connections (port 25)
you need to telnet to SMTP server from the Command prompt
1. Start -> Run -> enter "command" ->Click ok
2. type "telnet mail.yourdomain.com 25" at the dos prompt
You will either see "220 mail.itsgroup.org (IMail
7.10 xx-x) NT-ESMTP Server X1", or "connection refused" message,
In the case you receive "connection refused" message or
timeout, you need to contact your ISP with the request to open
port 25 in their firewall or proxy. Or, try using their SMTP
server for your outbound mail connection.
In the case you receive SMTP server prompt, the problem is
most likely in the e-mail program configuration. In this case
you need to send us the exact error message. It will also be
helpful if you make a screenshot of the problem and attach it to
Please also verify that your e-mail program is configured as
specified in our FAQ.
The following service providers block outbound connections and
require your use of their outbound SMTP server:
you have any questions:
support@ITsGroup.org or Phone 1-780-701-7282.