I have just set up a Mailcow mail server to replace my old iRedmail server. All is going well. I have this behind an NGINX reverse proxy. However, if I go into the main mailcow application (not SOGo or Roundcube), and I enable MFA either by TOTP or Webauthn, the ActiveSync breaks (only tested on iOS). It starts working again when I deactivate TOTP 2FA.
I was hoping to have the web interface 2FA, but it appears that this is not the case.
Anyone else experienced this? Any idea how to resolve?