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I had the same problem: 0x800CCC0F. I could receive but not send email.<br />
<br />
Turns out I was listed in the PBL (policy black list) of spamhaus.org<br />
<br />
Removed my IP- adres en I could send mail again.
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I had the same problem: 0x800CCC0F. I could receive but not send email.

Turns out I was listed in the PBL (policy black list) of spamhaus.org

Removed my IP- adres en I could send mail again.

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When sending emails from Outlook express i get the following error message;<br />
<br />
Your server has unexpectedly terminated the connection. &nbsp;Possible causes for this include server problems, network problems, or a long period of inactivity. &nbsp;Account 'gemma@gpc568.com', Server: 'mail.gpc568.com', Protocol: SMPT, Port 25, Secure(SSL): No, Error Number: 0x800CCC0F.<br />
<br />
I am able to receive emails but when i try to send i get this message. &nbsp;I am able to send email from this address using the web based control pannel for the GPC568.COM website.<br />
Any suggestions as to how to fix this problem?
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When sending emails from Outlook express i get the following error message;

Your server has unexpectedly terminated the connection.  Possible causes for this include server problems, network problems, or a long period of inactivity.  Account 'gemma@gpc568.com', Server: 'mail.gpc568.com', Protocol: SMPT, Port 25, Secure(SSL): No, Error Number: 0x800CCC0F.

I am able to receive emails but when i try to send i get this message.  I am able to send email from this address using the web based control pannel for the GPC568.COM website.
Any suggestions as to how to fix this problem?

Outlook will not send email error number 0x800CCC0F

An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.