Error code "0x800CCC80" in Outlook

[Scooby_snax]

I am a little perplexed
I get the above error code when trying to send email from laptop via mobile phone on 3 of my 5 email accounts (different domains)
However when I connect to a router all send perfectly.
Any ideas what I should do?
Not sure if it makes any difference sending on the phone via O2

[Slinky]

First google response gave me this...

http://social.technet.microsoft.com/Forums/en-US/o...

[Scooby_snax]

Thanks but that didnt help
The error meesage now is "none of the authentication methods supported by this client are supported by your server"

[Slinky]

http://www.allpostnews.co.uk/i17/Outlook%202007%20...

How about that one?

from here : http://www.google.co.uk/search?sourceid=chrome&amp...

[Scooby_snax]

Slinky thanks for your searching, I perhaps shopuld have said I had googled before I started asking the question in here.
Responding to your last response when I remove the SMTP authentication then I get that I get the 0x800CCC78 error message suggesting I am sending spam

[Scooby_snax]

OK I have sorted it
I am using my mobile providers SMTP settings, so input those in the outgoing SMTP in Outlook, seems strange it worked initially OK with some domains and not others
for reference
http://forum.o2.co.uk/viewtopic.php?t=173