Please rebuild perl-NetAddr-IP for the EL-4 and EL-5 branches. It is required
by perl-Mail-SPF, which in turn is required by amavisd-new.
It built on both branches for me with no problems.
New Package CVS Request
Package Name: perl-NetAddrIP
Short Description: Manages IPv4 and IPv6 addresses and subnets
Branches: EL-4, EL-5
Rebuilt, repopush pending.