> So that seems to be it. I would really need to compile an "authentic" > postfix version. Can you give me a link to source RPM of 2.5.5 for > centos 5
Wietse does not release any RPM versions of Postfix. As you can imagine, keeping that up for all the RPM-based distros would be quite a feat. However, Simon Mudd has done a great job making SRPMs from which you can build Postfix for just about any distro. The problem is, I think that's what you used in this case. This was a problem I reported to him a year or two ago, where it would always result in case-sensitive cdb lookups. This was fixed in 2.4.7-2 and it worked fine in my tests. However, it looks like it has crept back into some release after 2.4.7-2. To verify, I just built and installed Simon's 2.4.7-2 SRPM and cdb works fine (not case sensitive). But in 2.5.5-1 it is broken again. Looking at the changelog files, I'd guess 2.5.1-0.4 broke it again, since in that release he no longer mentions 2.4.7-2. You probably need to contact Simon and ask him to look at this cdb problem one more time. --Brian