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Author Topic: Multiple DKIM signing  (Read 8357 times)


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Multiple DKIM signing
« on: April 15, 2016, 05:08:58 AM »

I got it:

This was implemented for the 4.5v and the configuration looks like this:

   <domain gmail.queue>
        second-dkim-sign yes
        second-dkim-identity @gmail.mdrctr.com

Thanks support@port25.com for the guidance


Good morning people,

I'm trying to find out how to make multiple sendings. I'm currently trying with this configuration which doesn't seem to work because it only signs with the dkim-identity domain, but not with the from one. Any idea for the double signing?

   <domain gmail.queue>
        dkim-sign yes
        dkim-identity @gmail.domain.com

Thank you so much in advance, pmta colleagues.

Best regards,


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Re: Multiple DKIM signing
« Reply #1 on: April 15, 2016, 08:52:36 AM »

Section "10.4.4 Second DKIM signing support" in the User's Guide covers this in detail.

Let us know if you still have issues after reading through this section and trying the config examples provided.