Welcome, if you would like to post a comment please register.
We also encourage you to explore all things Zimbra with our team and members of the community.
I have several people as contacts who have a Suffix to their name. For example,
John Doe, PhD
Entourage and Mac address book correctly have John as First Name, Doe as last name and PhD as suffix. However, Zimbra will show PhD as Last Name and Doe as Middle Name, which results in a contact
Bugzilla
Wiki
Source
Problems with handling suffix 
Linear Mode
