Default user profile property mappings for Active Directory Domain Services

When you upgrade from SharePoint Server 2010 to SharePoint Server 2013, the user profile mapping property WorkEmail retains the default mapping to mail (that is "WorkEmail" maps to "mail"), however when a new synchronization connection mapping property is created in SharePoint Server 2013, the new mapping defaults to the ProxyAddress property (that is, "mail" maps to "ProxyAddress"). After the upgrade process has been completed successfully, the mapping properties can be manually changed based on your organizational requirements.

User profile property	AD DS attribute
SPS-DistinguishedName	dn
SID	objectSid
Manager	manager
PreferredName	displayName
FirstName	givenName
LastName	sn
SPS-PhoneticDisplayName	msDS-PhoneticDisplayName
SPS-PhoneticFirstName	msDS-PhoneticFirstName
SPS-PhoneticLastName	msDS-PhoneticLastName
WorkPhone	telephoneNumber
WorkEmail	Mail/proxyAddress
Office	physicalDeliveryOfficeName
SPS-JobTitle	title
Department	department
UserName	sAMAccountName
PublicSiteRedirect	wWWHomePage
SPS-ProxyAddresses	proxyAddresses
SPS-SourceObjectDN	msDS-SourceObjectDN
SPS-ClaimID	<specific to connection>
SPS-ClaimProviderID	<specific to connection>
SPS-ClaimProviderType	<specific to connection>