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Home >> Website & Internet FAQ >> Socket Error 10051

Socket Error 10051

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The connection to the server has failed. Account: 'your_email_address@your_domain.com', Server: 'smtp.yourdomain.com', Protocol: SMTP, Port: 25, Secure(SSL): Yes, Socket Error: > 10051, Error Number: 0x800CCC0E

The above error occurs because your ISP (the company providing you with your Internet access be it dial-up or high speed) has port 25 blocked in an attempt to slow down spam. Since most mail is sent on Port 25, an ISP will disable it in an attempt to stop any spam coming through their system. The mail server for your domain likely uses port 25 and therefore; you are going to get blocked.

You can solve this issue in one of two ways:
  1. Use your ISPs outgoing mail server. Contact them for the address.
  2. Contact your ISP and ask them to open port 25 for you.
To change the outgoing mail server in Outlook Express, do the following.
Tools --> Accounts --> Highlight the account you want to edit
Properties --> Servers --> Change the Outgoing mail (SMTP) to that of your ISPs.
Then click Apply and OK.



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