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jeboehm / docker-mailserver

Docker Mailserver based on the famous ISPMail guide
MIT License
353 stars 92 forks source link

Undelivered Mail Returned to Sender #234

Closed qu4ngnm closed 1 year ago

qu4ngnm commented 1 year ago

☺️ Please check the troubleshooting page before opening a new issue. ☺️

https://github.com/jeboehm/docker-mailserver/wiki/Troubleshooting

Describe the bug The IP address sending this message does not have a 550-5.7.25 PTR record setup, or the corresponding forward DNS entry does not 550-5.7.25 point to the sending IP. As a policy, Gmail does not accept messages 550-5.7.25 from IPs with missing PTR records. Please visit 550-5.7.25 https://support.google.com/mail/answer/81126#ip-practices To Reproduce Steps to reproduce the behavior:

Expected behavior Send email success

Docker environment (please complete the following information):

jeboehm commented 1 year ago

Hi Quang, your bug description contains the solution. I'm closing this. Please put more effort into creating a new issue next time.