Special character as email name

HI Guys,

Is there a way to use special characters as email name? I tried, and it doesn’t allow me. For example, #!@abc.com.


you can use special characters in aliases but not in user names

It looks like it’s rejected by my box when sending to that alias from other email providers.

Error Details
Reported error: 550 5.7.367 Remote server returned not permitted to relay -> 554 5.7.1 #!@zzz.com: Relay access denied
DSN generated by: DM5PR01MB2492.prod.exchangelabs.com
Remote server: box.zzz.com