My emails aren't received by one contact

[Jbartonp]

I have one contact who never receives my Comcast emails. She does get my emails I send via gmail. I can receive emails from her, just can't send to her. Both on Comcast.

[Latoque]

Are you sure  she doesn't have a filter set up to redirect or  forward emails coming from you?

[Jbartonp]

She says she doesn't even know how to set a filter in her Yahoo account.

[Latoque]

Did she check to see if the messages are going to her Spam/Junk folder in Yahoo?

[Jbartonp]

First thing we checked. Talked with Comcast at length today. They think that Comcast is seeing her email as a spam address? Their security people are looking into it.