SMTP and group mail configuration in same host

[PavithranS]

Infos:

• Used Zammad version: 6.0
• Used Zammad installation type: source
• Operating system: ubuntu 22
• Browser + version: chrome

Expected behavior:

• trying the add email id for the group with the same host using in SMTP

Actual behavior:

• im trying to create a IMAP for assigning it groups but error says host is not reachable but i configured the same host for SMTP and it was working fine.
• below are the screen shots

Steps to reproduce the behavior:

[MrGeneration]

The SMTP server for Microsoft 365 is smtp.office365.com.
If Zammad can’t reach the host, the port might be blocked outgoing.

Also, note that Microsoft expects XOAUTH authentication and does no longer allow basic authentication. This is not supported by the notification channel and might stop working without warning.