I have a bunch of users from our university's computer club going years back where the club provided emails. For 15 years it was hosted on a qmail installation on a personal box of mine.
A few years ago, as my time got more expensive and I didn't want to manage it as closely, I moved it to the free gsuite account that I had (with some headaches, as free gsuite didn't support email routing, so qmail aliases couldn't transition over, as "-" is not a traditional alias character).
So, this is screwing with me a bit. What will probably end up happening, as I have a personal 1 user gsuite account already, which does support routing rules, I will just make the old domain an alias on my personal domain and use multiple routing rules to forward mail the matches regex ^username(-.*)?@ to whatever is their personal email account.
A few years ago, as my time got more expensive and I didn't want to manage it as closely, I moved it to the free gsuite account that I had (with some headaches, as free gsuite didn't support email routing, so qmail aliases couldn't transition over, as "-" is not a traditional alias character).
So, this is screwing with me a bit. What will probably end up happening, as I have a personal 1 user gsuite account already, which does support routing rules, I will just make the old domain an alias on my personal domain and use multiple routing rules to forward mail the matches regex ^username(-.*)?@ to whatever is their personal email account.