We use a lot of mailing groups in our company and many of these groups have internal and external email addresses.
I have tried creating creating one in the mail module and including external addresses such as user@gmail.com as an external alias, however it gives me an error when trying to save.
Is there something I need to change in the configuration to be able to save, or maybe achieve this in another way?
The first step of creating an address for the external address isn’t needed because it creates an address user@gmail.com@domain.tld which isn’t working and leads to the validation error.
You could add the gmail addresses directly as testgroup destinations.
Thank you mrmarkuz for helping and reporting this issue. For anybody looking for a work around and for my own future reference.
The way to make this work is to create the external user user@gmail.com and add the destination to the intended group in my case testgroup@domain.com
once that is done, go back into the group and add user@gmail.com.