My outlook account was working fine until I have added Exchange account. The Exchnage account is working fine but all my other email accounts are unable to send emails, but the accounts are reciving emails without any problems.

I have been testing the account and this is the message i get "Outlook cannot connect to your Outgoing (SMTP)  e-mail server". What i cannot explain is that i havent chnaged anything and it suddenly stopped working.

Any help would be greatly appriciated.

What is the error code? if it is "ox80042109", this means that Outlook couldn't connect to your SMTP (outgoing mail)
server. Is your mail account provided by the same people that are providing your DSL connection? Many ISPs now block access to any SMTP servers but their own (you can thank the spammers for that restriction...), so if someone other than your DSL provider is hosting your mail you may be blocked from sending mail through your mail provider's servers. If that's the case, contact your DSL provider and see if they have an SMTP server you can use as the outgoing server in your account.

Hope this helps...Let us know whether this solves the problem.

Yes it was the error code. And also i was using my laptop at Uni so i guess Uni network was not allowing the connection to SMTP but i have just tried it at home and it is working. Thanx anyway.