HELP! cannot send emails

[Guest]

As of June 30, I have been unable to send or reply to emails through Outlook
Express 6. I am able to send through my ISP's website. The error message
that I receive when I try to send is:

An unknown error has occurred. Subject 'test email', Account: 'XYZ', Server:
'SMTP.myisp.com', Protocol: SMTP, Server Response: '554 5.7.1 Mail from this
email address is not allowed and has been blocked.', Port: 25, Secure(SSL):
No, Server Error: 554, Error Number: 0x800CCC6F

Does anyone have any suggestions on how to resolve this problem? I've tried
deleting my email account through Outlook Express and inputting the info all
over again, but that hasn't helped. I've even tried to set up the account
through Outlook and that gives me the same error.

Any help would be greatly appreciated. Thanks.

 

[Milly Staples [MVP - Outlook]]

Try posting this in an Outlook Express news group - this is not one of them.
Outlook is a part of Microsoft Office and is what this group supports.
Outlook Express is a part of Internet Explorer and has its own news groups.

You can also find some good Outlook Express information here:

http://insideoe.tomsterdam.com


--
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. Due to
the (insert latest virus name here) virus, all mail sent to my personal
account will be deleted without reading.

After furious head scratching, dreamincolor asked:

| As of June 30, I have been unable to send or reply to emails through
| Outlook Express 6. I am able to send through my ISP's website. The
| error message that I receive when I try to send is:
|
| An unknown error has occurred. Subject 'test email', Account: 'XYZ',
| Server: 'SMTP.myisp.com', Protocol: SMTP, Server Response: '554 5.7.1
| Mail from this email address is not allowed and has been blocked.',
| Port: 25, Secure(SSL): No, Server Error: 554, Error Number: 0x800CCC6F
|
| Does anyone have any suggestions on how to resolve this problem?
| I've tried deleting my email account through Outlook Express and
| inputting the info all over again, but that hasn't helped. I've even
| tried to set up the account through Outlook and that gives me the
| same error.
|
| Any help would be greatly appreciated. Thanks.