I don't know if this is the correct forum to ask this question. If not, I apologize.

I'm using Groupwise 2012 on a SUSE server.

I have two specific users that can't get email from Gmail or Yahoo mail...don't know if other domains are affected. The bounce mail indicates a 550 error. I have checked the GWIA log and can't see where the attempted email shows up. I've used GWCHECK against both mail boxes and no errors were found.

Where do I look next?