Email Not Sending from Mail

[aedesign]

Hi,

This is my first post on here. Hopefully someone can help me.

I have noticed over the last few weeks that whenever I try to send an email from my macbook pro using Mail, it comes up with the message "cannot send using the sever mail.tpg.com.au", which is the sever I have always used to send and receive emails.

The annoying thing is, I keep getting emails, but cannot reply or send new emails. I haven't changed any settings knowingly, and I don't understand why it will no longer send.

The only thing that I can think of is the fact I have just spent about 2 weeks away from home and have received emails on my Mac using other people's wireless internet. Could that have something to do with the severs??

All I want to be able to do is to send emails again haha

Anyone who has had this problem before and fixed it, it would be great to here from you!

Thanks

 

[DudeMartin]

Maybe you should try to remove your e-mail accounts from the Mail app and re-add them again, because when you add an account, all of the server stuff gets reconfigured (so you don't have to mess with it, thanks Apple).