Is it possible to change the generic attribute mappings when using an external LDAP services that provides GAL for a domain? Is there a configuration file that I could modify which objects Zimbra pulls from an external LDAP source?

My issue is Zimbra (based on the Zimbra documentation) is mapping the LDAP object "postalAddress" to Zimbra object "workStreet". This seems to be wrong based on rfc2252, rfc2798, and rfc2256. This could be a showstopper of a lot of the universities and companies that have bulit there LDAP directory based on the rfc's.
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6.27. Postal Address
( DESC 'Postal Address' )
Values in this syntax are encoded according to the following BNF:
postal-address = dstring *( "$" dstring )
In the above, each dstring component of a postal address value is
encoded as a value of type Directory String syntax. Backslashes and
dollar characters, if they occur in the component, are quoted as
described in section 4.3. Many servers limit the postal address to
six lines of up to thirty characters.
1234 Main St.$Anytown, CA 12345$USA
\241,000,000 Sweepstakes$PO Box 1000000$Anytown, CA 12345$USA
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I would like to instead map the Zimbra object "workStreet" to the rfc2256 standard "street" or "streetAddress"
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5.10. street

This attribute contains the physical address of the object to which
the entry corresponds, such as an address for package delivery

( NAME 'street' EQUALITY caseIgnoreMatch
SUBSTR caseIgnoreSubstringsMatch
SYNTAX{128} )
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