DKIM Exchange Hybrid with 365

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DKIM Exchange Hybrid with 365 - multiple DKIM records

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swamprat96		#1 Posted : Sunday, February 24, 2019 1:47:02 PM(UTC)
Rank: Newbie Groups: Registered Joined: 2/24/2019(UTC) Posts: 2 Location: sydney		I have a Hybrid environment with the majority of mailboxes on 365 but some mailboxes still on on premise exchange along with authorised SMTP servers. I have DKIM working fine for Office365 with two selector keys as CNAMEs: selector1-xxx-xxx-xxx-xx._domainkey selector2-xxx-xxx-xxx-xx._domainkey and have enabled DKIM in Office365 Now on Premise where I have the same domain I use two Fortimail appliances where I can create the DKIM keys - one for each appliance and activate them. My question is- Can I simply create two additional CNAMEs for these additional records on the same domain?


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ivan		#2 Posted : Tuesday, February 26, 2019 1:32:50 AM(UTC)
Rank: Administration Groups: Administrators Joined: 11/11/2010(UTC) Posts: 1,154 Thanks: 9 times Was thanked: 55 time(s) in 55 post(s)		Originally Posted by: swamprat96 I have a Hybrid environment with the majority of mailboxes on 365 but some mailboxes still on on premise exchange along with authorised SMTP servers. I have DKIM working fine for Office365 with two selector keys as CNAMEs: selector1-xxx-xxx-xxx-xx._domainkey selector2-xxx-xxx-xxx-xx._domainkey and have enabled DKIM in Office365 Now on Premise where I have the same domain I use two Fortimail appliances where I can create the DKIM keys - one for each appliance and activate them. My question is- Can I simply create two additional CNAMEs for these additional records on the same domain? Yes, you can simply create different selector on premise server, selector3 .... , it won't take effect to your office 365 DKIM. Here is the detail: https://www.emailarchite...ultiple-exchange-servers


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swamprat96		#3 Posted : Tuesday, February 26, 2019 1:08:39 PM(UTC)
Rank: Newbie Groups: Registered Joined: 2/24/2019(UTC) Posts: 2 Location: sydney		thanks heaps- exactly what I was looking for


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