SMTP errors sending non-mail items

[Guest]

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.'

 

[Nikki Peterson [MVP - Outlook]]

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

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

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

--
Nikki Peterson [MVP - Outlook]

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.'

 

[Guest]

Outlook: 2002 w/SP3 (10.6515.6626
IE: 6.0.2800.1103xpsp2.030422-1633 with all updates
Outlook Express: 6.00.2800.112

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

 

[Guest]

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.aspx?scid=kb;en-us;823663&Product=out

 

[Nikki Peterson [MVP - Outlook]]

Thank you for sharing your solution.

--
Nikki Peterson [MVP - Outlook]

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.aspx?scid=kb;en-us;823663&Product=out