Hello all, we are considering Proxmox Mail Gateway as our all-in-one solution for most of the E-mail problems we have in our company. That being said, it is still unclear why there are two datasheets of the same product on the Proxmox website and why 4.1a is neither being offered to test, nor advertised for that matter. It would answer most of our technical questions, actually: 1. Do you offer a commercial anti-spam solution? 2. Can we use an alternative to Avira (e.g. ESET) parallel to ClamAV? 3. Is it possible to use a LDAP server to authenticate (instead of local users)? 4. Can we use DKIM with Proxmox Mail Gateway? Thank you in advance!