[dmarc-discuss] How to troubleshoot DKIM hash did not verify

2018-04-24 Thread Ivan Kovachev via dmarc-discuss
Hello all, could someone help in troubleshooting why DKIM failed at the end recipient due to a change in the header or body of the email? Is it possible to figure out exactly what changed in the message that invalidated DKIM? For example, the reason is body hash did not verify but would I be ab

Re: [dmarc-discuss] How to troubleshoot DKIM hash did not verify

2018-04-24 Thread Bressier Simon via dmarc-discuss
Hi Ivan, with the current implementation of dkim, no, it only compares hashs. If the hash on the headers doesn't match the hash made by the recipient server, then it fails. There is no way to know what (and where) is the difference by comparing 2 hashs, that's also the interest of a hash, it doesn