Reply
Posted by
Contributor
Member Since: ‎07-28-2006
Posts: 8

Can receive but not send email via OE 6

Sending email fails starting 3/30. Error message is:

"The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was '[my user name]@comcast.net'. Subject 'Emailing: chartbundle2.pdf', Account: 'mail.comcast.net', Server: 'smtp.comcast.net', Protocol: SMTP, Server Response: '550 5.1.0 Authentication required', Port: 587, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC78"

Comcast online support (the utility that checks all connections) found no problem. No, there is a problem.

Posted by
Email Expert
Member Since: ‎03-10-2004
Posts: 6,888

Re: Can receive but not send email via OE 6

 


OldCranky wrote:

Sending email fails starting 3/30. Error message is:

"The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was '[my user name]@comcast.net'. Subject 'Emailing: chartbundle2.pdf', Account: 'mail.comcast.net', Server: 'smtp.comcast.net', Protocol: SMTP, Server Response: '550 5.1.0 Authentication required', Port: 587, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC78"

Comcast online support (the utility that checks all connections) found no problem. No, there is a problem.


 

 


Q1: How do I setup Outlook, Outlook Express and Windows Mail?

 

JR

Posted by
Email Expert
Member Since: ‎05-21-2006
Posts: 29,117

Re: Can receive but not send email via OE 6

 


OldCranky wrote:

Sending email fails starting 3/30. Error message is:

"The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was '[my user name]@comcast.net'. Subject 'Emailing: chartbundle2.pdf', Account: 'mail.comcast.net', Server: 'smtp.comcast.net', Protocol: SMTP, Server Response: '550 5.1.0 Authentication required', Port: 587, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC78"

Comcast online support (the utility that checks all connections) found no problem. No, there is a problem.


 

 

I would check your settings againest those in this clickable link.  I use OE, but I use port 465 with SSL on.

you would find the port settings here: Tools>Accounts>Mail tab> Properties> and then tick on the Advanced tab.



Need Email Help? Please post the following information in your post.
Do you use XfinityConnect? The Full or Lite version?
Do you use an email client? Which one? (Eg; Windows Live mail, Outlook, a smartphone etc.)
Which browser/version do you use? And- have you cleared your browser cache?
Which operating system? XP, Vista, Windows 7, Mac OS X
Details of the problem you are having.




Posted by
Bronze Problem Solver
Member Since: ‎05-12-2006
Posts: 3,352

Re: Can receive but not send email via OE 6

 


OldCranky wrote:

Sending email fails starting 3/30. Error message is:

"The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was '[my user name]@comcast.net'. Subject 'Emailing: chartbundle2.pdf', Account: 'mail.comcast.net', Server: 'smtp.comcast.net', Protocol: SMTP, Server Response: '550 5.1.0 Authentication required', Port: 587, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC78"

Comcast online support (the utility that checks all connections) found no problem. No, there is a problem.


 

You need to enable authentication on port 587. Check the box that says something like "My server requires authentication" in the SMTP setup.

 

Posted by
Contributor
Member Since: ‎07-28-2006
Posts: 8

Re: Can receive but not send email via OE 6

thanks for the tip. I let the outgoing server roll back to the default 25 from 587 and it worked.

Posted by
Contributor
Member Since: ‎07-28-2006
Posts: 8

Re: Can receive but not send email via OE 6

And I checked that authentication thingy. Thanks also

Posted by
Mac Expert
Member Since: ‎12-01-2003
Posts: 5,829

Re: Can receive but not send email via OE 6

Port 25 may work now, but it may also stop working at any time without warning. Comcast's default (recommended) SMTP server settings are Port 587 with authentication. Encryption (SSL/TLS) is also highly recommended. Port 465 will also work. SSL is required on this port, as is SSL encryption.

Advanced
You must be signed in to add attachments