LDAP is configured the following way:

SOGoUserSources = (
{
type = ldap;
id = public;
CNFieldName = cn;
IDFieldName = uid;
UIDFieldName = uid;
MailFieldNames = ( eseriMailAlternateAddress,
eseriMailSenderAddress );
baseDN = "ou=people,dc=acme3";
bindDN = "cn=sogo,ou=applications,ou=system,dc=acme3";
bindPassword = password;
hostname = ldaphost;
port = 636;
encryption = SSL;
canAuthenticate = YES;
isAddressBook = YES;
displayName = "Shared Addresses";
}
);

Note the MailFieldNames. SOGo pulls the email addresses out fine for the users and it shows them in identities.

In the "Shared Addresses" it shows whatever is in the "mail" field instead of the fields set in MailFieldNames.