DKIM signature is not valid

DomainKeys Identified Mail (DKIM) is a method for associating a domain name to an email message, thereby allowing a person, role, or organization to claim some responsibility for the message. The DKIM signature of your message is:

v=1; a=rsa-sha256; c=simple/simple;; s=2017; t=1499658064; bh=rnDDjVIPBw5bhpnVGPNja8qdKhQPkkOa4WJR/w9xjv0=; h=To:Subject:Message-ID:Date:From:MIME-Version:Content-Type:Content-Transfer-Encoding; b=QBJ9iG2g6rvzQNN/XSbhs5X5fXq+BkeEo9BMeucrL2K7qPZvfLwkhUXYaC7OYe7H9SOjNQncXkuB6xOnxzjQDTobH5C5adCvrD/AfAQTZnUhDioCEVP6B7fCc3Rer+zuH3p4FHW8vpeJq/ZX2dV55g5/ufTFlFBSD98v+ybBbXo=

Your public key is:

"v=DKIM1; t=s; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/fV51ZgTQ7kv4+9W7094N14vFwV5UZzbS+GboB4VaVTjWKhcBj+DpNTkU7D3ovaHRgWLMuX3lZFZiL6zkPrNbpbig8mgAfhmg8JLC12fO4VBUCwJcrERGwhbi0gMpQFnVHXwVpC7tfTXQDpN+uWLLo5ZCi73rGrDwLc4hlOt+xwIDAQAB" Key length: 1024bits

Your DKIM signature is not valid



Howdy -- sorry that you're having a problem with DKIM!

However, it appears that you're using Virtualmin GPL there.

My suggestion would be to post your issue in the Forums, which we monitor, along with lots of wonderful folks in the community. You can then do some troubleshooting there in the Forums to determine the cause of your issue.

If we determine there's a Virtualmin bug, we can continue this request here -- though note that CentOS 5 has reached it's EOL, if there's an issue with the DKIM package it's no longer being maintained.