Exchange 2003 public folder replication and spam filter

I am in process of moving from one Exch 2003 Svr to another Exch Svr 2003 box.  The machines are Svr 2003 w/ Exch 2003 SP2, Symantec Antivirus CE on the system (it is ignoring Exch directory, GFI, and IIS).  I am using GFI Mail Security 10 and Mail Essentials 14 on both servers.  All my users are still on Svr1 (old server).  I am working on PF replication before i move the users.  After adding Svr2 to the replication list i noticed that GFI Mail Essentials was blocking the messages sent from Svr1-IS@domain.com do to AD harvesting rules.  I was able to add Svr1 to the IP white list on Svr2 because all the internet mail is still routed to Svr1 and is processed for spam on that machine.  My problem/ question is will the messages/content that was blocked b4 i fixed the problem be resent from Svr1 to Svr2?  Any idea how long b4 it re-sends if it does.  Thanks, jt