Symantec Mail Security 8.0.5 for Domino provides native 64-bit support for Domino 8.5.1 on Windows 2008/2003 and AIX 6.1/5.3. You want to know how to upgrade from a 32-bit version.
On Windows, you can upgrade SMSDOM 4.1, 5.1, 7.5, and 8.0 to SMSDOM 8.0.5 (32-bit). You can not upgrade any earlier installed versions of Mail Security to the 64-bit version of Mail Security.
On AIX, you can upgrade SMSDOM 8.0.x to SMSDOM 8.0.5 (32-bit). You can not upgrade any earlier installed versions of Mail Security to the 64-bit version of Mail Security.
A direct support is not available to migrate from 32-bit version of SMSDOM to 64-bit. Follow the steps below to migrate from 32-bit version of SMSDOM to 64-bit.
To migrate from 32-bit version of SMSDOM to 64-bit
Uninstall 32-bit version of SMSDOM. However, you may retain the SMSDOM databases during this process.
If Symantec Endpoint Security (SEP) or Symantec AntiVirus is not installed on your computer, ensure that virus definitions of the earlier 32-bit version of SMSDOM are deleted.
These virus definitions are located in the Symantec Shared\VirusDefs folder on Windows and in the /opt/Symantec/virusdefs folder on AIX.
Upgrade your 32-bit Domino server to 64-bit.
Install the 64-bit version of SMSDOM on your 64-bit Domino server.
Premium Antispam for 64-bit platforms is not available in versions prior to SMSDOM 8.0.7 64-bit. If you're planning to use Premium Antispam on your 64-bit Windows server, please install SMSDOM version 8.0.7 64-bit, which provides 64-bit Premium Antispam support.