Gmail Question Mark icon for email address forwarded to default Oracle address

@mailpc

Summary

can I make the question mark not show up in gmail when the email address we are using forwards to Oracle

Content

I have set up an outlook mailbox that forwards over to oracle to our default @mailpc.custhelp.com mailbox for an interface.  It is used for outgoing messages only as far as Oracle is concerned.  But when we send from that mailbox, in gmail the icon that shows up next to the message is a question mark rather than an initial in a colored circle.  This is apparently something gmail implemented a while back but has anyone ever found a way around it?  It just makes our emails look suspicious when they are legit.