Hey Spiceworks Community. Over the past few months, a client has been having issues sending and receiving emails through Exchange 2013, which is hosted by 1&1/Ionos, with no help from
Before jumping into the issues, it probably goes without saying that 1&1 hosting is a bad idea for business, so if you are thinking about it, please save yourself the trouble and don't!
But in the meantime, as we wait for a go-ahead to move to Office 365, can anyone help?
Issues
Issue 1 - For certain receiving domains (apparently those using Spamhaus), outgoing emails are blocked and receive a bounceback similar to this, noting a 1&1 IP address (82.165.159.132 or 82.165.159.133).
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The...