Failed to create inbound outbound email using mydomain email


  • Used Zammad version: 5.4.1
  • Used Zammad installation type: package
  • Operating system: CentOS7
  • Browser + version: Chrome

Hi All,
I tried to create email inbound and outbound using but unfortunately LOGIN failed. I’m not sure if the host was not correct or not. I even tried host name but still failed to create. Same case host name using which is successful to spiceworks but not for zammad inbound outbound.

But if using default email domain like, the email inbound and outbound was successfully created using same host name

Is there some specific host name for a certain
I think was using host

Expected behavior:

  • Email inbound and outbound was created

Actual behavior:

  • LOGIN failed.

Steps to reproduce the behavior:

This is my production logs:

I, [2023-05-30T15:50:11.213228 #909-111720] INFO – : Started POST “/api/v1/channels_email_inbound” for at 2023-05-30 15:50:11 +0800
I, [2023-05-30T15:50:11.225895 #909-111720] INFO – : Processing by ChannelsEmailController#inbound as JSON
I, [2023-05-30T15:50:11.226356 #909-111720] INFO – : Parameters: {“adapter”=>“imap”, “options”=>{“realname”=>“TEST”, “email”=>“”, “group_id”=>“1”, “host”=>“”, “user”=>“”, “password”=>“[FILTERED]”, “ssl”=>“ssl”, “port”=>“993”, “folder”=>“”, “keep_on_server”=>false}}
I, [2023-05-30T15:50:11.256446 #909-111720] INFO – : fetching imap (Sign in to Outlook port=993,ssl=true,starttls=false,folder=INBOX,keep_on_server=false,auth_type=LOGIN)

Microsoft does not support Basic Authentication for about one or two years no. Use the Microsoft 365 channel instead.

See: Accounts — Zammad documentation

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