Email notification of changes

I believe I have set a number of threads so that I should be receiving an email notification when a new subject is added or replied to, but I haven’t received anything for a long time.
Since no one else seems to be having any troubles, I am assuming that it is the filtering software at my end.

What is the email address/domain that these notifications use?


mine come from “” - both the digests and the reply notifications use this address.