Email address with dash / hyphen on the username?

For example email address like this:

Will bounce and give a 550 error.

I can send from it but not receive any email, is this an error from MXroute?

I had configured this to be recognized as an alias along with + and _. So for example if you sent email to, it was delivered to, the “-second” was dropped. This was intended to address a desire for on the fly alias creation for inbound, as some customers like to make up aliases for services that they sign up with.

I’ve reverted this configuration for the “-” part.

Yeah I figured it was setup that way, what confused me is that I was allowed to create an email account with that format when it can’t be used.

Thanks for reverting the configuration for that part.