can't send email

[Trish58]

for several days I have been unable to send email though can receive ok.
this error message appears:
The message could not be sent. The authentication setting might not be
correct for your outgoing e-mail [SMTP] server. For help solving this
problem, go to Help, search for "Troubleshoot Windows Mail", and read the
"I'm having problems sending e-mail" section. If you need help determining
the proper server settings, please contact your e-mail service provider.

The rejected e-mail address was '(e-mail address removed)'. Subject 'youtube',
Account: 'mail.o2.co.uk', Server: 'smtp.o2.co.uk', Protocol: SMTP, Server
Response: '550 RCPT TO:<[email protected]> Relaying not allowed - please
use SMTP AUTH', Port: 25, Secure(SSL): No, Server Error: 550, Error Number:
0x800CCC79

please can anyone help??

 

[Gary VanderMolen]

Like it says, you need to use SMTP authentication:
Go to Tools, Accounts, select that account, Properties, Servers.
The box for "My server requires authentication" must be checked.

 

[Trish58]

that's great. I've been struggling for days and you sort it out instantly -
brilliant - thank you so much

Like it says, you need to use SMTP authentication:
Go to Tools, Accounts, select that account, Properties, Servers.
The box for "My server requires authentication" must be checked.

--
Gary VanderMolen, MS-MVP (Mail)

for several days I have been unable to send email though can receive ok.
this error message appears:
The message could not be sent. The authentication setting might not be
correct for your outgoing e-mail [SMTP] server. For help solving this
problem, go to Help, search for "Troubleshoot Windows Mail", and read the
"I'm having problems sending e-mail" section. If you need help determining
the proper server settings, please contact your e-mail service provider.

The rejected e-mail address was '(e-mail address removed)'. Subject 'youtube',
Account: 'mail.o2.co.uk', Server: 'smtp.o2.co.uk', Protocol: SMTP, Server
Response: '550 RCPT TO:<[email protected]> Relaying not allowed - please
use SMTP AUTH', Port: 25, Secure(SSL): No, Server Error: 550, Error Number:
0x800CCC79

please can anyone help??

 

[Gary VanderMolen]

You're very welcome. Thanks for reporting back.

--
Gary VanderMolen, MS-MVP (Mail)

that's great. I've been struggling for days and you sort it out instantly -
brilliant - thank you so much

Like it says, you need to use SMTP authentication:
Go to Tools, Accounts, select that account, Properties, Servers.
The box for "My server requires authentication" must be checked.

--
Gary VanderMolen, MS-MVP (Mail)

for several days I have been unable to send email though can receive ok.
this error message appears:
The message could not be sent. The authentication setting might not be
correct for your outgoing e-mail [SMTP] server. For help solving this
problem, go to Help, search for "Troubleshoot Windows Mail", and read the
"I'm having problems sending e-mail" section. If you need help determining
the proper server settings, please contact your e-mail service provider.

The rejected e-mail address was '(e-mail address removed)'. Subject 'youtube',
Account: 'mail.o2.co.uk', Server: 'smtp.o2.co.uk', Protocol: SMTP, Server
Response: '550 RCPT TO:<[email protected]> Relaying not allowed - please
use SMTP AUTH', Port: 25, Secure(SSL): No, Server Error: 550, Error Number:
0x800CCC79

please can anyone help??

 

[Alby]

You're very welcome. Thanks for reporting back.

--
Gary VanderMolen, MS-MVP (Mail)

that's great. I've been struggling for days and you sort it out instantly -
brilliant - thank you so much

Like it says, you need to use SMTP authentication:
Go to Tools, Accounts, select that account, Properties, Servers.
The box for "My server requires authentication" must be checked.

--
Gary VanderMolen, MS-MVP (Mail)


for several days I have been unable to send email though can receive ok.
this error message appears:
The message could not be sent. The authentication setting might not be
correct for your outgoing e-mail [SMTP] server. For help solving this
problem, go to Help, search for "Troubleshoot Windows Mail", and read the
"I'm having problems sending e-mail" section. If you need help determining
the proper server settings, please contact your e-mail service provider.

The rejected e-mail address was '(e-mail address removed)'. Subject 'youtube',
Account: 'mail.o2.co.uk', Server: 'smtp.o2.co.uk', Protocol: SMTP, Server
Response: '550 RCPT TO:<[email protected]> Relaying not allowed - please
use SMTP AUTH', Port: 25, Secure(SSL): No, Server Error: 550, Error Number:
0x800CCC79

please can anyone help??

 

[Alby]

:

I have exactly the same problem. Same text message, same error message but
the authenication box IS checked. Any clues what to try next ?

You're very welcome. Thanks for reporting back.

--
Gary VanderMolen, MS-MVP (Mail)

that's great. I've been struggling for days and you sort it out instantly -
brilliant - thank you so much

:

Like it says, you need to use SMTP authentication:
Go to Tools, Accounts, select that account, Properties, Servers.
The box for "My server requires authentication" must be checked.

--
Gary VanderMolen, MS-MVP (Mail)


for several days I have been unable to send email though can receive ok.
this error message appears:
The message could not be sent. The authentication setting might not be
correct for your outgoing e-mail [SMTP] server. For help solving this
problem, go to Help, search for "Troubleshoot Windows Mail", and read the
"I'm having problems sending e-mail" section. If you need help determining
the proper server settings, please contact your e-mail service provider.

The rejected e-mail address was '(e-mail address removed)'. Subject 'youtube',
Account: 'mail.o2.co.uk', Server: 'smtp.o2.co.uk', Protocol: SMTP, Server
Response: '550 RCPT TO:<[email protected]> Relaying not allowed - please
use SMTP AUTH', Port: 25, Secure(SSL): No, Server Error: 550, Error Number:
0x800CCC79

please can anyone help??

 

[Alby]

:

Sorry, should have also said that there is an extra statement "
administrative prohibiton - relaying not allowed"

:

I have exactly the same problem. Same text message, same error message but
the authenication box IS checked. Any clues what to try next ?

You're very welcome. Thanks for reporting back.

--
Gary VanderMolen, MS-MVP (Mail)


that's great. I've been struggling for days and you sort it out instantly -
brilliant - thank you so much

:

Like it says, you need to use SMTP authentication:
Go to Tools, Accounts, select that account, Properties, Servers.
The box for "My server requires authentication" must be checked.

--
Gary VanderMolen, MS-MVP (Mail)


for several days I have been unable to send email though can receive ok.
this error message appears:
The message could not be sent. The authentication setting might not be
correct for your outgoing e-mail [SMTP] server. For help solving this
problem, go to Help, search for "Troubleshoot Windows Mail", and read the
"I'm having problems sending e-mail" section. If you need help determining
the proper server settings, please contact your e-mail service provider.

The rejected e-mail address was '(e-mail address removed)'. Subject 'youtube',
Account: 'mail.o2.co.uk', Server: 'smtp.o2.co.uk', Protocol: SMTP, Server
Response: '550 RCPT TO:<[email protected]> Relaying not allowed - please
use SMTP AUTH', Port: 25, Secure(SSL): No, Server Error: 550, Error Number:
0x800CCC79

please can anyone help??

 

[Gary VanderMolen]

Alby, right-click on your error message, copy, then paste it into a reply here.
We can't do much troubleshooting without seeing the complete error message.

 

[Alby]

Gary,
after about 36 hours I stopped getting the error message and everything was
sent off. Sorry to waste your time - and I will submit the whole error
message should it happen again. Thanks.
Alby

 

[Gary VanderMolen]

Feel free to come back here if the problem returns.