How To Fix Outlook Express Socket Error 10051

Over the past few days, some users have encountered an error code that says Socket 10051 Outlook Express error. This problem occurs for many reasons. We will review them now.

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    Simply put, our error means the SMTP server might have used authentication, so if the sender tries to connect to the SMTP host without authentication, the connection should be rejected with this SMTP Error 10051.

    Making sure SMTP works from each of our command lines (Linux) is something to consider when setting up a mail server. The most common spa special check from the SMTP command line is using the telnet command, possibly openssl, the ncat (nc) command. This method is also considered the most popular along with the SMTP relay test.

    How to fix socket error 10051?

    Re-enabling the router should serve the Internet server and allow your computer to connect to the forum. If the router has been damaged, such as by a collision with or spilling nectar on it, it often needs to be completely replaced. A misconfigured router can result in socket error 10051.

    Typically, SMTP error 10051 occurs when sending emails from email clients like Thunderbird outlook, etc.

    Each of us at Ibmi Media, as part of our server management services, regularly helps our clients troubleshoot genuinely related SMTP errors.

    Due to this, many people will look for ways to resolve this SMTP error.

    SMTP socket evaluation error 10051 – causes and solutions

    Here you will definitely learn about the various causes of this error and how to deal with it.

    1. ISP owner isp-firewall-problems

    Many people don’t allow their users to view “external” SMTP servers using traditional email programs such as Outlook, Outlook or Express.what

    So come back to avoid spam on the hosting server, the ISP is blocking port 25.


    To check if your ISP is blocking SMTP connections (port 25), our service engineersSupport recommends that the client set up telnet to connect to the SMTP server from Command Swift (DOS prompt):

    error socket 10051 outlook express

    When we see such a unique connection issue due to the size of the ISP, we recommend that our customers ask their ISP to remove the filter on this port.

    2. Problem with checking another smtp

    error socket 10051 outlook express

    One of the reasons could be incorrect SMTP authentication on the sender side.

    In simple terms, an error means that the SMTP server requires authentication. Thus, if the sender tries to connect to the SMTP server without authentication, the entire connection will be rejected with SMTP error 10051.


    First, we’ll look at the client’s email settings and enable authentication in the client’s smtp sender email. e.g.

    In Outlook, we check the SMTP web server settings by doing the following:

    First steps, we can open the Express mail client drive (outlook Outlook) and from there Tools >> Account Settings >> Additional Temporary Files >> Outgoing Server Tab >> My Outgoing ServerMail (SMTP) requires authentication.

    3. PC with antivirus enabled causes SMTP error 10051

    A third-party antivirus installed on the user’s PC can block the connection caused by some applications.

    In addition, the established connection was permanently terminated by the software. Perhaps this can be done with an excellent antivirus program.


    In this case, we advise our customers to disable the anti-virus software for their PC or optimize the anti-virus settings.

    [Still not sure how to fix this error? smtp We can help you with some of them.]

  • Outlook Express has just stopped working: Failed to connect to the hosting server. error number: 0x800CCC0E

    Original title of Outlook Express: Just Stopped Working

    Failed to connect to the server. Account: “sales”, server: “”, protocol: POP3, port: 110, security number from (ssl): socket error: number 10013, errors: 0x800CCC0E

    Which ad is preventing email from being scanned Are you Norton?

    Is the message that supports Norton email scanning disabled?

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  • Try an absolute test message with Norton, it will stop immediately with help. If removing Norton from work and custom configuration works, select the disabled email scanner if it is currently offered. Sometimes you just need to turn it off.

  • Outlook Express Error 6. Failed to establish connection related to server functions… error number: This 0x800ccc0e

    Why is the error displayed? on Server configuration failed. Account: ‘///.org Server:’, ‘///.world-wide-web’, SMTP, Protocol: Port: 465, Security (SSL): Yes, Socket Error: 10060, Error Number: 0x800CCC0E, How do I get POP3 and SMTP file accepted?
    I’m using Internet Explorer 6, Windows 2000 Professional

    Socket error: 10060, error number: 0x800CCC0E Insights, how can I login to POP3 as well how good is SMTP?


    Your ISP running a mail server can provide port numbers and other options. This information can be easily accessed on theISP help/support pages.

    Another common cause of error 0x800 is Secure Software Store: a virus scan checks incoming or outgoing email, or some kind of firewall interferes with authentication.

    How do you fix a socket error?

    A “socket error” indicates that important information sent over the network did not arrive in a timely manner. The easiest way to solve this problem is to perform a factory reset and firmware update. If the connector error is not resolved, try connecting to our lamp from your computer immediately.

    I hope this article helps you,

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