Reports of incoming emails bouncing

Reports of incoming emails bouncing

Please help,

We have setup our domain with zoho mail (fbccol.net)  and we are getting reports that some emails sent to us are bouncing.  I have tested this myself and have tried sending emails from a pop3.live.com server and it bounces back.  Report this morning came in that gmail servers were boucing back.  We have followed all instructions and email seems to be working correctly some of the time but this boucing issue really bothers us.

Thanks for any help you can give us.

Charles Powell
Church Administrator
cpowell@fbccol.net