It is OK with a similar program though, Juniper network's SSL VPN. I've been happy syncing with the SSL VPN and AweSync (Paid version), but my company will allow only AT&T to connect my PC to Lotus Notes.
This happens because of compatibility issues. If your company suggested a certain application you need to use it because it has been successfully tested and therefore recommended to use for customers/clients. Using something else other than recommended one involves that you know what you're doing and the worst part of this is that you will not receive any support at all.
Hi! I'm from Awesync technical support - do other apps using IMAP work now? Please contact us at firstname.lastname@example.org