As for 15% of your mail taking an abnormal amount of time, I'd try investigating twith Exchange 2003's message tracking feature. You can track its entire path to and from your organiztion with timestamps so you should be able to pinpoint where the bottleneck(s) are.
As for port configuration, generally more ports are required for servers and in the same AD site / routing group than those communicating remotely. To name a few, there's RPC ports, LDAP, HTTP, SMTP, the routing service, etc.
Rather than worry about each of these ports (pretty sure if you pole around online you should be able to find some sort of documentation on this) I'd use the Security configuration wizard that Microsoft provides. It has an Exchange server template that works fairly well that should take care of this for you.
Hope this helps,
I cant connect to your primary mail server, so that explains why mail is going to your backup mailers at your ISP.
As to why, that is something you are going to have to investigate further. Firewall/Proxy ( port 25 open inbound?), SMTP gateways configured correctly? AV or anti-spam interfering?
ok thats resolved now. sort of you can now dns report my exchange box it was down as i was trying to resolve the issue. Some email domains cant get messages to our box but yet 85% can? i got this guy i know to send me mail to my homail.com account and cc my work email address this only arrived at my hotmail? not my work? any ideas? driving me mad! thanks guys your all great! Loz
where the hell did i go wrong with this installation?