I am in the process of changing ISP. I have a server running windows server 2003 which is hosting serveral web sites. The server is also running POP3. The application that all the hosted sites run sends email from the server and the email is only accesed on from the lan. The emails where only used to document that emails where sent to remote users. The new ISP wants to know the mail server name. If I look in administrative tools\pop3 service I see a server called ctcg1 I thought this was the mail servers name. The isp said it's usually something like mail.doman.com If I look at Outlook the outgoing mail server is ctcg1 Do I need to change the mail server nae and if so How? Also the ISP is saying I will need a static IP for each domain I am hosting for reverse DNS. Is this true I didn't need it with the ISP I am currently using?