Few of our users are receiving below NDR;
In above NDR, user's last name is there with the prefix numbers.
#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##
In above NDR, just user's last name and first name is there with the prefix numbers.
I reviewed articles on internet stating it is an issue with "legacyexchnageDN". It says to adjust the legacyexchangeDNS value in the UserAD properties by ADSIEDIT to the same value mentioned in the NDR.
But in my case this NDR contains numbers in prefix.
Recipient Policy for our domain is FLastname@domain.com (First initial followed by lastname)
Please let me know how to resolve this.