Infos:
- Used Zammad version: 6.5.2-1761205660.8e51440c.noble
- Used Zammad installation type: package
- Operating system: Ubuntu 24.04
- Browser + version: Firfox 144.0(64 bit)
Expected behavior:
- Verification Email is sent, email is then read and verified receipt of email in inbox.
Actual behavior:
- Email is sent and received in manually checking inbox on pc. Zammad errors indicating unable to verify email.
Steps to reproduce the behavior:
- Zammad new install on Ubuntu 24.04, admin user created along with another using admin@domain.com for email address.
- Using Cloudflared tunnel to access zammad via domain name.
- Proton Bridge installed on Windows server 2022 to manage email. Accounts Split for individual Inboxes. IMAP and SMTP settings set to SSL and credentials stored for relevant email address.
- Login to Zammad and attempt to setup Email. Using the Expert option, Input the IMAP credentials (same as SMTP in Proton Bridge) along with Host which is local IP address of Windows Server - to which I have forwarded the ports 993 and 465 to the Bridge ports on Windows. Turned off SSL check as kept erroring with self signed certificate or Mismatch of Hostname in certificate.The IMAP pop up window checks credentials and if correct then shows the SMTP credentials window - enter the port and credentials as before (already entered by default).
- Saving this then activates the Email send - Which is received in my inbox - everytime! and after 30 seconds to a minute, it errors indicating it cannot verify the email in the inbox has been received.
- I have turned off Firewall to Windows Server - made no difference. I created a Firewall inbound rule to allow Proton Bridge - made no difference.
- Locally servers can access each other running in Proxmox.
- I have checked logs in /var/nginx/logs but nothing seems to identify any failure in connecting to Windows server. nothing obvious anyway. ON the Proton Bridge logs, it shows a lot of activity on IMAP with teh credentials for the account but nothing indicating being blocked or errors which would indicate Proton Bridge is not allowing access?
- I have set up email app on Androind phone using the credentials for the IMAP and SMTP and that works no problem.