SMTP errors sending non-mail items

Email sends and receives without error. Despite the statements to the contrary in the errors below the connection is active and regular email items process just fine.

Non-mail items (appointment updates, task updates, etc.) generate SMTP errors (samples below) and remain in the outbox in a 'prepared to send' state.

Not sure if this is Outlook, firewall, or ISP issue. Using broadband connection.

Errors:


Task 'Cox.net Mail - Sending' reported error (0x800CCC0B) : 'Unknown Error 0x800CCC0B'
Task 'Cox.net Mail - Sending and Receiving' reported error (0x8004210B) : 'The operation timed out waiting for a response from the sending (SMTP) server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).'
Task 'Cox.net Mail - Sending' reported error (0x800CCC0B) : 'Unknown Error 0x800CCC0B'
Task 'Cox.net Mail - Sending' reported error (0x800CCC13) : 'Unable to connect to the network. Check your network connection or modem.'
Task 'Cox.net Mail - Sending' reported error (0x800CCC13) : 'Unable to connect to the network. Check your network connection or modem.'
Task 'Cox.net Mail - Sending' reported error (0x800CCC13) : 'Unable to connect to the network. Check your network connection or modem.'
Task 'Cox.net Mail - Sending' reported error (0x800CCC13) : 'Unable to connect to the network. Check your network connection or modem.'

OL2002: Error 0x800CCC13 Occurs When You Try to Send E-Mail
http://support.microsoft.com/default...b;en-us;312349

OL2002: You Receive SMTP Errors When You Send Messages
http://support.microsoft.com/default...b;en-us;315258
2 NDR's and then 0x800CCC13

What version of Outlook are you using? (Please include service packs)

--
Nikki Peterson [MVP - Outlook]

"Working Online" wrote in message
...
Email sends and receives without error. Despite the statements to the
contrary in the errors below the connection is active and regular email
items process just fine.

Non-mail items (appointment updates, task updates, etc.) generate SMTP
errors (samples below) and remain in the outbox in a 'prepared to send'
state.

Not sure if this is Outlook, firewall, or ISP issue. Using broadband
connection.

Errors:


Task 'Cox.net Mail - Sending' reported error (0x800CCC0B) : 'Unknown Error
0x800CCC0B'
Task 'Cox.net Mail - Sending and Receiving' reported error (0x8004210B) :
'The operation timed out waiting for a response from the sending (SMTP)
server. If you continue to receive this message, contact your server
administrator or Internet service provider (ISP).'
Task 'Cox.net Mail - Sending' reported error (0x800CCC0B) : 'Unknown Error
0x800CCC0B'
Task 'Cox.net Mail - Sending' reported error (0x800CCC13) : 'Unable to
connect to the network. Check your network connection or modem.'
Task 'Cox.net Mail - Sending' reported error (0x800CCC13) : 'Unable to
connect to the network. Check your network connection or modem.'
Task 'Cox.net Mail - Sending' reported error (0x800CCC13) : 'Unable to
connect to the network. Check your network connection or modem.'
Task 'Cox.net Mail - Sending' reported error (0x800CCC13) : 'Unable to
connect to the network. Check your network connection or modem.'

Outlook: 2002 w/SP3 (10.6515.6626)
IE: 6.0.2800.1103xpsp2.030422-1633 with all updates.
Outlook Express: 6.00.2800.1123

Outlook Express is only used for newsgroups.
Neither of the KB articles was applicable.

Dis some digging and found that this is a symptom of incorrect default MTU settings in the router. Reconfigured and it seems to be working for new items. Old items still have trouble.
KB Reference:
http://support.microsoft.com/default...63&Product=out

Thank you for sharing your solution.

--
Nikki Peterson [MVP - Outlook]

"Working Online" wrote in message
...
Dis some digging and found that this is a symptom of incorrect default MTU
settings in the router. Reconfigured and it seems to be working for new
items. Old items still have trouble.
KB Reference:
http://support.microsoft.com/default...63&Product=out