Whoops its win2k advanced server my bad (we have like 10 servers hard to keep track which ones have which OS) I have tried to contact the person who set up their mail (he doesn't work there apparently). **** it all ;/.
yeah were using exchange. Its definitly on their end they can send to us fine but thing is apparently HELO is a command used when one stmp server is introducing itself to another. I assume they have anti-spam set up that checks to make sure the server sending the mail is who it says it is. I...
Background: I work for a company as a System Admin. Now I didn't set up the network. Anyway my problem is whenever my users e mail a specific domain the e mails get regected. I researched it and I have set it so that the reverse DNS points to our mailserver (the server I have been lead to...