Forum Discussion
Robert Bollinger
Jun 28, 2019Iron Contributor
DKIM behind Separate MTA
Hey Guys, Quick Question here on DKIM. I want to get it setup and running and plan on using Office 365 to do the signing etc with. However my question is this we have an edge MTA where all messa...
- Jun 28, 2019No worries!
I can’t find it personally, here’s how to setup DKIM
https://docs.microsoft.com/en-us/office365/securitycompliance/use-dkim-to-validate-outbound-email
Here’s also an account of what happens when you do (as instructed by ProofPoint)
https://www.google.co.uk/amp/s/amp.reddit.com/r/msp/comments/bn5zld/proofpoint_with_office_365_spf_record_and_dkim/
So they do say it’s possible and pass through if you follow the 365 guide, but has some caveats.
I would personally spin up a test domain and a mailbox to simulate it.
Hope that helps
Best, Chris
Robert Bollinger
Jun 28, 2019Iron Contributor
Do you know of any Microsoft documentation whcih specific covers setting up DKIM (office 365) behind another MTA?
as long as proofpoint doesn't modify the body hash, subject etc or other signed portions of the messages then i don't see how it would be a problem.
I agree with you in principal that we should have Proofpoint do the signing as its the last hop but that isn't always possible.
Thanks,
Robert
Jun 28, 2019
No worries!
I can’t find it personally, here’s how to setup DKIM
https://docs.microsoft.com/en-us/office365/securitycompliance/use-dkim-to-validate-outbound-email
Here’s also an account of what happens when you do (as instructed by ProofPoint)
https://www.google.co.uk/amp/s/amp.reddit.com/r/msp/comments/bn5zld/proofpoint_with_office_365_spf_record_and_dkim/
So they do say it’s possible and pass through if you follow the 365 guide, but has some caveats.
I would personally spin up a test domain and a mailbox to simulate it.
Hope that helps
Best, Chris
I can’t find it personally, here’s how to setup DKIM
https://docs.microsoft.com/en-us/office365/securitycompliance/use-dkim-to-validate-outbound-email
Here’s also an account of what happens when you do (as instructed by ProofPoint)
https://www.google.co.uk/amp/s/amp.reddit.com/r/msp/comments/bn5zld/proofpoint_with_office_365_spf_record_and_dkim/
So they do say it’s possible and pass through if you follow the 365 guide, but has some caveats.
I would personally spin up a test domain and a mailbox to simulate it.
Hope that helps
Best, Chris