I'm looking to enable 2fa on my webmail portal. We're running exchange on-prem and having it sitting behind our IIS reverse proxy. I tried following this guide (https://duo.my.site.com/s/article/3392?language=en_US) which doesn't give much details other than to put this in for the pattern: (?!^..duosecurity.com/.$)(^.$)*
Unfortunately, I need more help than that as I created an outbound rule with that pattern and set the action to 'none' (is there supposed to be a passthrough option, I didn't see it), with the hope that it wouldn't rewrite any duo traffic, but that just broke the reverse proxy and stopped normal traffic. Can anyone help walk me through what I should put for the rule?
