To check which server your email is on, login to Athena and issue the following command at your prompt:
Be sure to replace your-username with your MIT/Kerberos username. The result will list a "Type". IMAP means your mail is going to IMAP email server. EXCHANGE means your mail is going to the new Exchange email and calendaring server.
The following example shows the results for the user "oddball" who is on the IMAP email server.
If the type is "SPLIT" then your email is forwarded, but your home mail server will still be listed, like so:
If the type is "SMTP" then your mail is being forwarded to another server, and your home mail server will not be listed. In this case, one quick way to see what your home mail server is, is to very quickly turn your mail forwarding on and off. You can do this like so:
chpobox -p; chpobox -s email@example.com
This will turn your forwarding off (and tell you which type you have), and then immediately turn it back on again.
Otherwise, if you need assistance determining which system you use, contact the Help Desk.