asp error '80040211' when sending email

I have a asp website that sends emails.  This code has worked for over 2  years now, and 9 months on the current box.  All of sudden today (Tuesday) the site stopped sending emails with the error message

error '80040211'
/Segments/Validation/validate_falsification_questions.asp, line 362

line 362 is - myMail.Send

I am currently using windows server 2003 and microsoft exchange 6.5.  Here is my code :

sub sendmail()
      Set myMail=CreateObject("CDO.Message")

      HTML = HTML & "<html>message</html>"
myMail.HTMLBody  = HTML
'Name or IP of remote SMTP server
'Server port
      myMail.Configuration.Fields.Item("") =25
set myMail=nothing
end sub
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jhoop2002Author Commented:
McAfee Virus scan was blocking port 25.
Because you have presented a solution to your own problem which may be helpful to future searches, this question is now PAQed and your points have been refunded.


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