I’ve got my Laravel app working great for sending emails through Mailgun, but I’m stuck on the receiving part. When someone tries to email my domain (like [email protected]), I get bounce messages saying the user doesn’t exist.
The error I keep seeing is from eforward3e.registrar-servers.com telling me it can’t deliver messages because of “unknown user” errors. The diagnostic shows Status 5.1.1 which seems to be a mailbox not found issue.
I know Mailgun has routing features to forward incoming emails to webhooks, but it seems like emails aren’t even reaching Mailgun in the first place. What DNS records or settings do I need to change in Namecheap to make sure incoming emails get to Mailgun first? Is there a specific order I should configure things?
Those bounce messages from eforward3e.registrar-servers.com mean Namecheap’s still routing your mail instead of Mailgun. You need to kill any email forwarding rules in Namecheap’s control panel - not just change the MX records like others mentioned. I hit this exact same issue where old forwards were fighting with my new MX records. Log into Namecheap, go to the email section for your domain, and delete all existing email accounts or forwarding rules. They’ll override MX records and cause exactly what you’re seeing. Clean those out first, make sure your MX records point to Mailgun, then test with a simple incoming route that forwards to your personal email before you mess with webhooks.
Classic DNS issue. Your MX records are still pointing to Namecheap’s mail servers instead of Mailgun’s. I had this exact problem when I switched to Mailgun last year. Go into your Namecheap DNS settings and delete the existing MX records. Create new ones pointing to mxa.mailgun.org and mxb.mailgun.org with priorities 10 and 10. Ensure that you don’t have any A records for mail subdomains that might interfere. Heads up - propagation took 4-6 hours for me, and I kept receiving bounce messages during that time. Once DNS propagated, incoming emails hit my Mailgun routes, allowing me to process them through webhooks in Laravel.
check ur mailgun dashboard first - add and verify ur domain there before touching any mx records. most people skip this step then wonder why everything breaks. also set up routes for incoming mail in mailgun or it’ll just drop everything even with correct dns.