DKIM-Signature not being applied to mails

A

AshleighTheCutie

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Apr 7, 2022
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Hello all,

I enabled SPIF + DKIM / DMARC when I first installed DirectAdmin, and have been getting reports. However, I couldn't read them, so I just kinda let it sit.
Well, I filed a bug with Debian the other day, and their DMARC system actually gives a summary of the XML in a nice human readable format! (Woah, someone / something actually wanting ease of use??) Except it said that my e-mails... failed? Huh.

I went searching, found DMarcian, and set it up so both I and DMarcian get the reports, and waited a while for reports to come in. Sure enough, only e-mails sent from my domain to my domain have passed the DMARC checks, nothing else does.

Mind you, I'm a total idiot regarding E-Mail, but I am smart enough to research, and I figured out where the DKIM is applied, and I check my sent mails... no mention of DKIM anything in any of them.

I have no clue what you guys/gals may need to help me, so I'll just not attach anything but basic system info at first, and as this grows, I'll attach whatever you guys/gals need to see to assist.

I will say this however: I cannot recompile PHP, or MySQL: the VPS only has 1 GB RAM, and DA won't let me stop MySQL Server while I compile things, so PHP and MySQL are out of date, but I don't see how that would affect Exim / E-Mail things.
 

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I have the same symptom: DKIM not appended to outgoing emails. Perhaps it is also the same or similar problem? Have a thread over here:

Richard G

Post in thread 'DKIM not working / New Install / Deb 11'

beatkamp said:
Enable it in the exim configs and Exim:
da build exim
da build eximconf
Click to expand...
Back to basics.
So the DKIM key appears on the email page of the account. Did you add this key to your external DNS?

At this moment we're at Exim 4.98 #2
exim.pl does not have a version stated anymore
exim.dkim.conf is version 1.7

beatkamp said:
I use an external DNS. All my DKIM stuff is there. So far this is irrelevant as outgoing emails
are not tagged at all.
Click to expand...
That is not irrelevant, in the contrairy. Your external DNS should contain your DKIM key.

This is how the key permissions and ownership should look like...
  • Like

If you solved your issue, I would really appreciate hearing how you did it.
 
AshleighTheCutie said:
no mention of DKIM anything in any of them.
Click to expand...
Did you also test with mail-tester.com and what is the exact error given there?

Seems you're also on Debian, maybe we are encountering a specific Debian issue. Are you also on Debian 11?

Just wondering if this could be some apparmor thing or not. I'm not working with Debian but I know that thing can block certain things.
 
Richard G said:
Did you also test with mail-tester.com and what is the exact error given there?

Seems you're also on Debian, maybe we are encountering a specific Debian issue. Are you also on Debian 11?

Just wondering if this could be some apparmor thing or not. I'm not working with Debian but I know that thing can block certain things.
Click to expand...

I did try with mail tester and also sent myself emails. There is simply no DKIM appended in the email. It just looks like a good old email from before the days of DKIM.

I am indeed on Deb 11.

At this point, I have decided to raise a ticket. I have, at the very least, some good diagnostic information.

Will report back to this thread and to the other thread as well.
 
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