can't send mails after junk mail update

[Guest]

Please help me, any mail I try to send always get same ERROR,

***************************
Your message did not reach some or all of the intended recipients.

553 sorry, that domain isn't in my list of allowed rcpthosts
(#5.5.3 - chkuser)

 

[Oliver Vukovics]

Hi Dam,

maybe this site will help:
http://office.microsoft.com/en-us/outlook/HA011128331033.aspx

 

[Guest]

I have this same problem. I have tried everything that has been offered -
but it still does not fix the problem. More help would be greatly
appreciated.
Thanks!