SMTP office 365


  • Used Zammad version: 3.3.X
  • Used Zammad installation source: (source, package, …)source
  • Operating system: Centos 7 x64
  • Browser + version: firefox, chrome

Expected behavior:

Actual behavior:

  • Configure Mail Channel error Net::ReadTimeout

Steps to reproduce the behavior:

Status ok , check mails OK
Port 587

Error Net::ReadTimeout

Where does this error appear?
Do you have logfile entries you can share from that moment?

Ensure there’s no firewall blocking outgoing requests to port 993 and 587.

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