Name Change - Reply mail have an error

Name Change ProblemI wanted to change the name of a user… I did it but…

when the mail from the user (whos name is changed) is being replied by some of his emails , an error comes, user does not exists in domino address book… please help…

Subject: Name Change - Reply mail have an error

In the mail file, Tools, Preferences. Check “This mail files belongs to…”