Outlook 2003: error 0x80042109

I am not able to send emails. I have attempted everything posted in previous discussions and tried all the suggestions in the how-to area but nothing is working for me. On someday, 3/12 of my email worked properly. On the other day it did not work. I have got a Microsoft automatic update running. I was wondering whether something got updated on someday night that could have messed up outlook? Thanks

Could you please tell me what did you try? Have you tried to disable the Antivirus automatic email scanning that you have in your pc? Have you also checked that your Anti Spam whether it is blocking it or not?