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Sep 21st, 2018
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  1. This is the mail system at host mx.example.org.
  2.  
  3. I'm sorry to have to inform you that your message could not
  4. be delivered to one or more recipients. It's attached below.
  5.  
  6. For further assistance, please send mail to postmaster.
  7.  
  8. If you do so, please include this problem report. You can
  9. delete your own text from the attached returned message.
  10.  
  11. The mail system
  12.  
  13. <engineering@apps.example.org>: host 127.0.0.1[127.0.0.1] said: 554 5.4.0
  14. id=12305-07 - Rejected by next-hop MTA on relaying, from
  15. MTA(smtp:[127.0.0.1]:10025): 554 5.4.0 Error: too many hops (in reply to
  16. end of DATA command)
  17.  
  18. jayoung@mainmac:~$ dig -t mx apps.extension.org
  19.  
  20. ; <<>> DiG 9.10.6 <<>> -t mx apps.extension.org
  21. ;; global options: +cmd
  22. ;; Got answer:
  23. ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9432
  24. ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
  25.  
  26. ;; OPT PSEUDOSECTION:
  27. ; EDNS: version: 0, flags:; udp: 512
  28. ;; QUESTION SECTION:
  29. ;apps.extension.org. IN MX
  30.  
  31. ;; ANSWER SECTION:
  32. apps.extension.org. 299 IN MX 10 aspmx.l.google.com.
  33. apps.extension.org. 299 IN MX 20 alt1.aspmx.l.google.com.
  34. apps.extension.org. 299 IN MX 20 alt2.aspmx.l.google.com.
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