iCloud Custom domain: Receiving mail but not able to send

Tech Support
1

Using Mac Mail, I received an email addressed to my iCloud+ custom domain. When I tried to reply, I got this error message:

Mail error
Mail error1078×758 128 KB

In my reply, the “From” field contained the email for my custom domain.

However, if I’m in my iCloud inbox and start a new email, the “From” field contains an address that ends with icloud.com, and it sends without getting the error message.

If someone writes me at custom domain, and I want to reply, do I need to make the reply come from icloud.com? Or is there something I can do to both send and receive from my custom domain?

Thanks,
Russell

2

if you want to avoid scammers who scrape emails from public forums, best you edit your post and mask your emails.

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3

My domains are hosted by Google so I’ve never used iCloud, and I cannot guarantee this is correct.

But I found the following:

https://community.hubspot.com/t5/Account-Settings/Apple-iCloud-Custom-Email-Domain/m-p/942513

The above, says to me, that your custom domain is just an alias for you@icloud.com so *you have to use your @iCloud address, with an app-specific password, to log into the Apple SMTP server.

Then you should be able to use you@yourcustomdomain as your return address.

Good Luck

4

Good idea. Thanks for pointing this out.

5

I set up a new app-specific password.

Do I log into the Apple SMTP server in Mail settings? Like this:

  1. Go to Accounts > iCloud > Server Settings
  2. In the outgoing mail account pop up, select Edit SMPT server list?
  3. Add a new item with my @iCloud address in the username field
  4. Enter my new app-specific password.
  5. Set the host name to something like smtp.apple.com???

Thanks,
Russell

6

I don’t have access to those screens but the following video should help.

This video is a bit old so you will be using iCloud.com NOT beta.icloud.com

7

Thanks for your help.

I checked everything, but was still having no success.

My domain is hosted by Squarespace, and of course that’s where I was reviewing and confirming my DNS records while looking over the resources you provided.

I then noticed that Squarespace has started providing profiles for connecting to popular services, and iCloud was included. I deleted my old DNS records, loaded the iCloud profile, and I am now able to both send and receive from my domain via iCloud.

I guess I just needed to rebuild from scratch, and using Squarespace’s profile made it easy.

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