Mail delivery error

Maning

• January 28, 2019 15:03

I've got a problem with an email: Event: failure error Sender User: mydomain Sender Domain: mydomain.com From Address: myemail@mydomain.com Sender: myemail@mydomain.com Sent Time: Jan 28, 2019, 1:18:13 PM Sender Host: xxxxxxx Sender IP: xxxxxx Authentication: dovecot_login Spam Score: -1 Recipient: recipient@remotedomain.com Delivered To: Delivery User: -system- Delivery Domain: Router: Transport: fail Out Time: Jan 28, 2019, 1:18:13 PM ID: 1go4vk-0006E8-Og Delivery Host: Delivery IP: Size: 2.96 KB Result: retry timeout exceeded
When trying to ping from my server mail.remotedomain.com it fails. When pinging from my server the IP of mail.remotedomain.com, ping is OK. MX Toolbox test from mail.remotedomain.com SMTP Banner Check Reverse DNS does not match SMTP Banner More Info SMTP TLS Warning - Does not support TLS. More Info SMTP Transaction Time 15.609 seconds - Not good! on Transaction Time More Info SMTP Reverse DNS Mismatch OK - xxxx resolves to xxxxxxx SMTP Valid Hostname OK - Reverse DNS is a valid Hostname SMTP Connection Time 0 seconds - Good on Connection time SMTP Open Relay OK - Not an open relay.

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  rpvw

  • January 28, 2019 20:21

  Try to ping the destination remotedomain.com (the subdomain mail.remotedomain.com may not exist in that destination DNS !) If you cannot resolve it, there may be several reasons:

  • Your resolvers are not functioning as intended
  • There is/was a temporary failure in the destination DNS.
  • The destination DNS records have not yet fully propagated.
  • Either your server, or the destination server is being blocked by some blacklist
  • The destination mail-server is incorrectly configured
  • etc etc

  If all other mail from your server is delivered normally, then you have to assume the problem is at the recipient end, and all you can do as a server administrator is reach out to the recipient server operator, and ask for help resolving the issue.

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  Maning

  • January 28, 2019 20:55

  Thanks for your answer! mail.remotedomain.com has a different IP from remotedomain.com I can ping remotedomain.com but not mail.remotedomain.com I can ping mail.remotedomain.com from other server.

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  Maning

  • January 28, 2019 21:00

  My resolvers had problem thank you for your help!

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  cPanelLauren

  • January 30, 2019 17:08

  Awesome advice @rpvw thanks! @Maning glad to see that you were able to get the issue resolved! Thanks for letting us know.

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