Recently one of our users received NDR saying that e-mail message to icloud can't be delivered because it got rejected due to DMARC policy. User sent e-mail message using Outlook on the Web app, it is legit and user can accept that e-mail message was sent by him - respectively, ...
HIRAK ENTERPRISE 0 Reputation points 17 Apr 2024, 03:39 mx.google.com rejected your message to the following email addresses: dhruvhirak@gmail.com (dhruvhirak@gmail.com) Your message couldn't be delivered because the recipient's email server (outside Office 365) suspected that your mess...
554 5.7.1 Rejected message by MTA, RDNS record for connecting IP has no matching 'A' or 'MX' records 554 5.7.1 Delivery not authorized 554 5.7.1 <sender address>: Relay access denied 554 5.7.1 Bad senders system address General Recommendations See Deployment best practices for Messaging Gat...