Hi,
Currently using Mail Proxy in Simple mode, have my relay set to Host-based relay for my internal network. We're using a internal exchange server.
This is working fine however obviously with this no one can send any mail from an outside network (such as connecting through imap/smtp etc. via a phone or home computer that isn't vpn-ing in or going through OWA).
Just looking for the best way to allow such things without having a security risk; Allowing any on the host-based I could easily see being an issue. Obviously not possible to allow each individual's host network on the list.
Just wanted to know if there was another way that could be done that I'm not seeing, perhaps a way to say if it comes from the internal domain, regardless of the host address, let it send/relay through the smtp?
Thanks.
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