Can I use ‘mail.domain’ in my mail client?

For scale and redundancy reasons we operate each service from its own hostname. So we always recommend using the most relevant hostname for incoming and outgoing servers in mail clients. These are as follows:

• IMAP: imap.yourdomain.com
  

To view your IMAP hostname for mail setup, head to Manage Hosting and select the hosting package you need the IMAP hostname for.
In the Account Information section on the right-hand side, you’ll then see the Incoming Mail Server which will be your IMAP hostname.

• SMTP: smtp.yourdomain.com
  

To view your SMTP hostname for mail setup, head to Manage Hosting and select the hosting package you need the SMTP hostname for.
In the Account Information section on the right-hand side, you’ll then see the Outgoing Mail Server which will be your SMTP hostname.

However, for compatibility reasons and to help ease migrations, we automatically setup mail.domain for each of your packages.

Any clients already using these hostnames can continue to do so when the account is moved to O2OHost, and any new accounts added at O2OHost will have the same functionality.