Level 1

28 points

Custom Email Domain missing DKIM records

I have set up a couple of domains for icloud's custom email for domain following instructions as found https://support.apple.com/en-gb/HT212524. This includes setting up a CNAME record for the domain to point at the canonical DKIM record controlled by Apple. eg. a custom domain of 'foobar.uk.' should have a CNAME record 'sig1._domainkey.foobar.uk.' pointing to 'sig1.dkim.foobar.uk.at.icloudmailadmin.com.'

From the support document for a domain 'example.com':

CNAME:

host: sig1._domainkey

points to: sig1.dkim.[example.com].at.icloudmailadmin.com.

TTL: 3600

Unfortunately I cannot retrieve any records from the target (canonical) address: eg.

dig sig1.dkim.[example.com].at.icloudmailadmin.com. TXT

dig sig1.dkim.foobar.uk.at.icloudmailadmin.com. TXT

Clearly 'foobar.uk' is not my real domain, but I have 2 domains set up with Apple and neither has a valid DKIM record.

Anyone else?

Posted on Oct 6, 2021 2:32 AM

Similar questions

112 replies

Nick_WGD

Level 1

13 points

Apr 19, 2022 1:47 AM in response to th-m

It's been working flawlessly for me for a month and I'm checking my DKIM reports on a daily basis.

th-m

Level 1

4 points

Apr 20, 2022 3:47 AM in response to MikesDLP

Perfect, so it seems like Apple is doing a very long-term rollout. From what I've tried, the randomness doesn't depend on your own IP; I.e it's not region dependent.

th-m

Level 1

4 points

Apr 27, 2022 6:17 AM in response to Sebby*

I wonder if we should set a fixed IP as SMTP for a workaround?

th-m

Level 1

4 points

Apr 10, 2022 5:23 AM in response to Nick_WGD

No, it's not a n00b request — I've been trying to get it working since the day it got announced (And I've used DNS for 25 years). My initial report was for DKIM signing; now on 12.4 - negative on web/apps with one .com and one .me.

hmorneau

Level 1

8 points

Dec 20, 2021 10:07 AM in response to Allie777

The problem is on iCloud side. At this point better to use an other SMTP server in the mean time.

Feb 1, 2022 4:02 AM in response to KevinD-B

Seems like Apple is aware of this. Glad this isn't just my issue!

I'm experiencing this too. I hope they'll update here when there's progress or notify us.

Good luck to everyone.

th-m

Level 1

4 points

Mar 24, 2022 9:35 AM in response to th-m

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Custom Email Domain missing DKIM records