Outlook 2000 Error 550 Sender verify failed

  • Thread starter Thread starter Ian Collier
  • Start date Start date
I

Ian Collier

Hello all

We have one machine on our network that cannot send mail for some reason.

Everytime this machine attempts to send mail using Outlook 2000 it fails,
reporting the following error:

"The message could not be sent because one of the recipients was rejected by
the server. Server response: '550 Sender verify failed'. (Account: 'Fred',
smtp server: 'relay.clara.net', error number: 0x8000ccc79)."

It is not a simple matter of setting the authentication on the outgoing mail
server, as all the other machines on the network (also using Outlook 2000)
do not have this setting and they can send mail fine.

Anyone come across this before and know of a resolution.

Thanks in advance.


--

Ian Collier
IT Director
John Allen Consulitng
http://www.jaaconsult.com
 
Is there anything different about this one machine? Is there any sort of
outbound mail virus scanning?
 
On Thu, 27 Oct 2005 06:58:58 -0400, Vince Averello [MVP-Outlook] wrote:

Hello Vince

Thanks for replying.

There is nothing different about this machine compared to the others. It
is a Windows 2000 pc with sp4 on it and Office 2000 (including Outlook of
course) has sp3 and all the latest patches.

The network settings from this machine come from a dhcp server, as do all
the others. The anti virus software (Sophos) is also installed the same
as all the others. So as far as I can tell, there no difference in terms
of how Outlook and the network is set up compared to the other machines.

Receiving email is not a problem either. But, I have just found out that
printing emails is also a problem.

When trying to print the following message appears:

"Outlook.exe has generated errors and will be closed by Windows. You will
need to restart the program. An error log has been created."

We checked the event viewer and could not find any error related to this.

drwatson reports no faults detected.

Can anyone shed light on this?

Ian
 
Just as a quick test turn off the scanner and see if sending works.
 
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