Hello. I have a problem with email. I installed a Microsoft SBS 2003 server. We have a global pop3 account. The domain is gurteencollege.ie. We are using Microsoft Exchange server to handle email. We can't send email to certain companies one of them being our biggest partner (teagasc.ie) but it gets rejected back with the following:
'Your message did not reach some or all of the intended recipients. Could not deliver the message in the time limit specified. Please retry or contact your administrator.'
I am a complete impasse as to what to do. This problem has being going on for 6 months now. Can anyone help?