Hello,
I have much experience on Qnap, Synology, virtualization, linux, networking, firewall, cloud, hosting, postfix, dovecot, mailwizz, zimbra, synology mail server, microsoft exchange server, microsoft windows servers, azure, aws. ......etc.
Please check my short profile.
I hope i will fullfill your 98% requirements with experties.
feel free to contract with me.
Thanks
swapan