Nobody should notice anything
The “kitmail” emails are now sent out via a different sending server which does DKIM email signing. This is increasingly relevant since the new owner of the known universe (an outfit going by the name of “google”) is dumping all incoming emails unless they have SPF (we have that but it is easy to break) or DKIM.
If you have any problems with PMs, you know where to find me
The other forum-generated emails e.g. notifications of posts on a thread you are watching, etc, still go out from the older server, for now.
The other emails now also use the same SMTP server. So if you are not getting notifications etc, let me know.