After a firmware update our Altalink C8145 had no communication with our Synology server when using Workflow Scanning. Even though we have an older model Xerox upstairs and Warkflow Scanning still worked fine witht the same exact settings. I spent countless hours on the phone with tech support to no avail. However, after searching these forums I decided to try enabling up to SMB 3 on the Synology device itself. This fix worked immediately. Hope this helps someone.
Sorry for not updating this sooner. The issue was a misconfiguration in the printer. We had the gateway IP (192.168.1.1) set as a DNS for the xerox's in addition to a legitimate DNS server like 126.96.36.199. By removing that, it allowed it to pull, the IPs correctly and reach the NAS without issue.
This mis-configuration was mixed up by the technician that had installed the Xerox originally, but took quite a while to track down.