Hi again, I'm having a big headache setting up the dkim on my company mail server. I create a 1024 bit key and set up my dns records also with spf and dmarc. I've checked it on various test tool: - mail-tester.com gives me a 10/10 score - dkimvalidator.com says my signature is valid and pass the test - the keycheck at dkimcore.org says that my dkim record is valid - test spf/dkim on mxtoolbox.com give me a valid result
everything seems perfect .... BUT - some of our customers are blocking our mail - on a gmail account reading the headers of my mail I found "dkim fail with domain null" - www.appmaildev.com/it/dkim reports me "DKIM-Result: fail (bad signature)" - mail test on en.internet.nl says that "a DKIM record (TXT) could not be found" but it found the dmarc record (that I set up on dns a day later than dkim) Now are more than 36 hours from the last time I've changed a dns records so I don't think that is a dns propagation problem. Now I don't know what else I can do to properly setup my server Thanks in advance Fabio Mecchia
