http://blogs.technet.com/b/exchange/archive/2011/09/14/how-lingering-links-can-impact-oab-generation-process.aspxWithin Exchange, any Distribution Group(s) or E-mail enabled Security Group(s) which contain Lingering Links will impact the OAB (Offline Address Book) generation process causing it to not replicate correctly. While this issue has been around since ADen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/exchange/archive/2011/09/14/how-lingering-links-can-impact-oab-generation-process.aspx#3456575Fri, 30 Sep 2011 15:11:13 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3456575HankC<p>why do these invalid links and other bad data prevent the OAB from being created? </p> <p>Why does having an invalid DN in the manager or secretary attribute, for example, &nbsp;impact creating the OAB?</p> <p>It&#39;s a nice check for bad data but should not invalidate the OAB...</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3456575" width="1" height="1">http://blogs.technet.com/b/exchange/archive/2011/09/14/how-lingering-links-can-impact-oab-generation-process.aspx#3453493Thu, 15 Sep 2011 15:09:28 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3453493exchangeuser<p>We did face this issue and OABvalidate really helped us in fixing the issue.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3453493" width="1" height="1">http://blogs.technet.com/b/exchange/archive/2011/09/14/how-lingering-links-can-impact-oab-generation-process.aspx#3453313Wed, 14 Sep 2011 21:58:38 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3453313Anon<p>Ran it against 6801 objects, 1518 have &quot;homeMTA UnresolvableDN&quot;</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3453313" width="1" height="1">