Forwarding Alias Breaks DMARC and Creates Auto-Reply Loops
Meridian uses Google Workspace for email. [email protected] is an alias that forwards to meridian.freshdesk.com. The domain publishes DMARC p=reject, but its SPF record does not include Freshdesk and no DKIM CNAME has been added. Freshdesk is configured to send replies from [email protected]. In the last 30 days, 22% of outbound support replies landed in customer spam, and several enterprise customers reported missing replies. Meanwhile, customer vacation auto-responders are creating new tickets; one OOO reply generated 14 tickets in a loop because Freshdesk's auto-acknowledgment went back to the auto-responder. The portal is at support.meridian.com and uses the same brand. You must fix deliverability and loops without changing the customer-facing address or breaking the portal. The support team also sends 1,800 replies a week, so a trial-and-error fix is not acceptable.
1. Diagnose the deliverability failure using the DNS and routing details. What is the likely alignment/authentication problem?
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The likely failure is DMARC alignment, not a broken Freshdesk mailbox. Forwarding [email protected] to meridian.freshdesk.com changes the path: the message leaves Google and is re-delivered by Freshdesk, so the original SPF result no longer covers the sending server. Replies from Freshdesk use From: [email protected], but meridian.com's SPF does not authorize Freshdesk and there is no DKIM signature aligned with meridian.com. With DMARC p=reject, receiving gateways can reject or spam-folder those replies.
The alias also creates a loop risk because the auto-acknowledgment goes back to the auto-responder. The portal is a separate DNS name, so fixing mail should not break it, but the support address must remain [email protected] for brand and customer trust. The diagnosis should be confirmed by checking Authentication-Results headers on a test reply: look for spf=pass/fail, dkim=pass/fail, and dmarc=pass/fail with alignment.
2. Give the email configuration steps and the order you would do them, including verification.
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Order matters. First, add the Freshdesk DKIM CNAME records to meridian.com DNS and wait for propagation; verify DKIM signs as meridian.com. Second, update SPF to include Freshdesk's sending include, keeping Google's include, and keep the lookup count under 10. Third, leave DMARC at p=reject but monitor aggregate reports during the change; do not weaken it permanently. Fourth, replace the Google alias with a verified support address in Freshdesk: either [email protected] forwarding to the Freshdesk address with forwarding confirmation, or a dedicated support.meridian.com subdomain if the root domain cannot be verified cleanly.
Send test messages to Gmail, Outlook, and a corporate gateway, and inspect the headers. Only then turn on auto-acknowledgments. Document the DNS changes and rollback records. The portal stays on support.meridian.com; do not move it to the Freshdesk domain just to fix email.
3. How would you stop auto-reply loops while still accepting legitimate out-of-office messages?
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Enable Freshdesk's auto-reply detection and add a rule that checks standard headers such as Auto-Submitted: auto-replied, X-Autoreply, X-Autorespond, and common subject prefixes. When a message is identified as an auto-reply, do not send the customer acknowledgment; add a private note and set the ticket to Pending or Closed according to policy. Test with a real Gmail vacation responder and an Outlook out-of-office before enabling broadly.
Also check the loop path: the auto-acknowledgment should never be sent to a message that is itself an auto-reply. If the customer's vacation responder replies to a Freshdesk notification, that is a loop; suppress it at the first detection. Do not block all messages with 'out of office' in the body, because a human may forward one. Monitor for duplicate tickets from the same sender and same subject within a short window, and alert if the volume spikes.