Vacation+DKIM+DMARC problem

[mami]

Hi
I have a big problem with DKIM+DMARC and vactions. I use DKIM+SPF and DMARC policy (v=DMARC1; p=reject pct=100)

If I normaly send e-mail all outgoing e-mail was signed by DKIM and all works fine. If my user use vactions mode - all incoming e-mail go via lmtp to vacations and outgoing mesages is not signed by DKIM and gmail rejected thats e-mail.
Probably is bug in exim+vacations via lmtp

Hot fix - change DMARC policy to v=DMARC1; p=none pct=100 - but this is not good idea

 

[wila]

Is this perhaps for the first -automatically created- email account?

 

[mami]

The problem applies to all e-mail accounts who signed DKIM and use DMARC record