SOLVED Exim overriding default dkim

iso99

Well-Known Member
Jan 5, 2011
112
7
68
cPanel Access Level
Root Administrator
Hi,

I need to change the default DKIM keys in my "transport" section of exim config. I'm using a smarthost, so I have a custom "router" and "transport" options in my exim config file.

I tried adding "dkim_selector = xxx" in my transport, but it does not change anything. I also tried adding the other dkim options like "dkim_private_key" etc., but what only happens is that the header includes 2 dkim signatures, one for the default one and another for my custom selector key.

Transport section:

Code:
smarthost_transport:
    driver = smtp
    hosts_require_auth = xxx.server.com
    port = 587
    dkim_selector = xxx
    dkim_domain = $sender_address_domain
    dkim_private_key = "/var/cpanel/domain_keys/private/${dkim_domain}"
    dkim_canon = relaxed
Sample output of doubled DKIM signatures
Code:
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
   d=mydomain.net; s=default; h=Message-ID:Subject:To:From:Date:
   Content-Transfer-Encoding:Content-Type:MIME-Version:Sender:Reply-To:Cc:
   Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:
   Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:
   List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
    bh=SHr4+LUicKfmV1jR7Yw4Saqk9NOGg8YwL7zKWvfZyPE=; b=B53RnTaqkz+NLJZyLyosEOvHE
   gPwvapvwvvfe/dIOkerxjouzACidTNWiwxQotrDaWgF7eEcr4YH7EJk5W9CKJ82cRPN941GXFms0q
   oM8UaT+4kqOMHRx/pU7on/ID3mMxb+4yf5hKloFTBsYedXh1URKNcZRmneUYMgCQIdx89s6vIrBDK
   9J6QTzQfSmrCNNx+gTTIjxDCEl1n3ZTkmWZIbJl23I7HWpGCTwkICyl8FddUfLSVJHV6NjDkaoyww
   AsMAFFhiMi1q/+VpfMqJ80e8M+0UsEBV7wAL9Gmk++HKfoqfaPeI1fPMIygm3H+Qn7GmWhoVDfry4
   fn7+h6qTA==;
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
   d=mydomain.net; s=default; h=Message-ID:Subject:To:From:Date:
   Content-Transfer-Encoding:Content-Type:MIME-Version:Sender:Reply-To:Cc:
   Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:
   Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:
   List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
    bh=SHr4+LUicKfmV1jR7Yw4Saqk9NOGg8YwL7zKWvfZyPE=; b=zHjR1swBR5pezm2J8GIkfuWaO
   53MD+ojnHl+7z8asUZS5gm1UTWHa0QBtt8tnRXRhC6lMGXkArnxCbv9HLGYs1V5gmBGXyZZvX5gtN
   R7Z2RYNspGSj1jzKgPk2BDCdVL343PB7VCDMeCHHltvhllulrv0PMttSJ2lGGixlv6SY0egCvlspp
   LggXz8pjK7gkkfQklv5JHVkPnwlapfEfJjK6vu2fYN7EJLfAptMPXys6qIRbEf5gRXlCCzWDqSZEb
   iYv1kWIyn6L4COCjNKDGZ4jQRkJZsL+XP7kctiQMq+kwAa38D2nJ2kglqJGJMs3Ou5rFyYmS7q6M+
   hKOJisMJw==;
I think it's conflicting with dkim_remote_smtp. When the router proceeds to my custom transport, it still processes dkim_remote_smtp.

I tried adding no_more after my router, does nothing too.

This has been asked before but there was no solution on this topic.

Hoping to get some responses again now :)

Thanks.
 

iso99

Well-Known Member
Jan 5, 2011
112
7
68
cPanel Access Level
Root Administrator
Ok, sorry, nevermind. Apparently, it all works. My smarthost also has a DKIM of its own which is conflicting with dkim in my cPanel when it relays the message - thus, the double dkim signatures. I disabled it and it's now only sending 1, along with the proper dkim_selector. :)
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,904
2,218
463
Ok, sorry, nevermind. Apparently, it all works. My smarthost also has a DKIM of its own which is conflicting with dkim in my cPanel when it relays the message - thus, the double dkim signatures. I disabled it and it's now only sending 1, along with the proper dkim_selector. :)
Hello,

I'm happy to see you were able to address the issue. Thank you for updating us with the outcome.