I have a couple HP CM3530 MFPs on a corporate network setup to send scans via email through smtp.comcast.net. Today they are getting an error that the smtp gateway is not responding. Any reason that would be happening?
I am having the exact same issue. I have a HP Colorlaserjet CM3530 which I have used to email scanned documents for a year using smtp.comcast.net. Now I get constant error messages that the gateway cannot be reached. I recently updated to a Docsis 3.0 modem. Any ideas why my connectivity suddenly broke?
Telnet works to the server. just won't respond as a valid gateway on the HP. Don't know what changed suddenly, but I have two of these and they both won't communicate with the server anymore. Changed to a different mail server. works fine.