Ability to sign with DKIM domain aliases too

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<t>Would you like hMailServer to DKIM sign alias domains?</t>

Yes
2
100%
No
0
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Total votes: 2

amokkaths
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Ability to sign with DKIM domain aliases too

Post by amokkaths » 2015-12-18 17:55

Self-explanatory.
Additional settings and ability to specify DKIM settings for domain-alias too.


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mattg
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Re: Ability to sign with DKIM domain aliases too

Post by mattg » 2017-11-17 23:46

feel free to nominate a question that users can vote on, and some suggested answers

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RBoy
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Re: Ability to sign with DKIM domain aliases too

Post by RBoy » 2018-12-04 04:42

I vote for this feature also. Been bumping my head to understand why it wasn't signing emails with an alias domain

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mattg
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Re: Ability to sign with DKIM domain aliases too

Post by mattg » 2018-12-04 06:44

To me for this to work, would require two separate signatures, one for the Domain, and another for the Domain Alias...

I can't see that this would be easily achieved
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Re: Ability to sign with DKIM domain aliases too

Post by RBoy » 2018-12-05 16:36

mattg wrote:
2018-12-04 06:44
To me for this to work, would require two separate signatures, one for the Domain, and another for the Domain Alias...

I can't see that this would be easily achieved
I don't think you need separate signature. When Google mail does DKIM signing on behalf of other domains it uses it's own key.

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mattg
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Re: Ability to sign with DKIM domain aliases too

Post by mattg » 2018-12-05 22:58

I've just checked a few mail messages

Outlook hosted domains have DKIM in the format
example.outlook.com or example.microsoft.com

gMail hosted domains have two DKIM signatures
DKIM-Signature = example.yyyymmmdd.gappssmtp.com
AND
X-Google-DKIM-Signature which is their own signing

It seems to me that they customise the DKIM signature for each sender.
Always relaxed though.
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RBoy
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Re: Ability to sign with DKIM domain aliases too

Post by RBoy » 2018-12-06 19:45

Feel free to correct me if I'm wrong, but with a relaxed implementation it should be acceptable to use the same DKIM signature for different domains from what I've understood about it and with the appropriate DMARC setup it should still work, it may not be "aligned" but it'll be accepted. Is that correct?

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Re: Ability to sign with DKIM domain aliases too

Post by mattg » 2018-12-06 23:15

I honestly don't know enough about it

If what you say is true, then what does DKIM signing actually achieve?
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