Service desk (Or incomming email maybe?) can not find project email [Rejected]

I believe I have Incomming email and Service Desk setup correctly. When I run

gitlab-rake gitlab:incoming_email:check

I get the following :


Incoming Email: ... Checking Reply by email ...

IMAP server credentials are correct? ... Checking servicedesk@mcmiller.com
Checking servicedesk@mcmiller.com
yes
Mailroom enabled? ... skipped
MailRoom running? ... skipped

Checking Reply by email ... Finished
Checking Incoming Email ... Finished

When I send an email using servicedesk+group-project-number-issues-@mcmiller.com, a new issue is created and the service desk bot adds the issue to the project and I get a notification about the issue from the gitlab support-bot, whole nine yards.
image

I see that the initial key has changed in the reply to address so I know that this should be in the service registry. I consistently get every comment in the issue emailed to me with the same reply-to address.
When I reply to this email (by clicking reply to) however, even though I see the correct To address, I consistently get :
image

(I know the two screen shots are from two different issues, I just couldn’t find one from the original and have deleted the issue)

I checked in the mail room log and I do not see any errors there, I checked the service desk email, and do not see any odd behavior there.

I am self-hosted running 15.2, The only thing I can think of is maybe the incomming_email and service desk use different registry entries or something so service desk assigns the reply to address and incomming_email is whats picking up the email and can’t find the servicedesk+{key} maybe? I know I’m missing something but everything seems to work aside from commenting via reply-to emails.

Any help or suggestions on what to look for would be greatly appreciated.