I am using a linux server for email and Outlook 2007 for my clients. We recently switched servers but kept the same setting for the server. We use webmail.domain,com.
Some of my systems have had no problem with the change while other systems could not update and synchronize (I am using IMAP) . For the systems that are having trouble, I have had to set the server settings to use the ip address.
Could someone suggest a possible solution?