Forward mail to more than one remote simultaneously

[JMauC]

Is it possible to do that?

Instead of sending a copy of the e-mail to one remote, send it to multiple remotes at the same time.
I need to do some testing on my production mail server, but I cannot lose any mails that arrive during this testing, so using smtprelay to replicate these e-mails to both my lab and production server would be very helpful.

If it's not possible, do you guys know any other way to accomplish that?

Thx for the help :)

[JMauC]

Actually, I didn't notice before, but there's the option to add multiple remotes in the same line, separating them with spaces.
I did that and it's working now, so there's no need to do anything.