I'm sorry that the previous mail was so short, but there are no error messages in the error log. It happens on several subdomains and for aliases within the same domain, which makes no sense to me, especially since I never came across this problem with the previous httpd version.
I'm using the following directive: Protocols h2 http/1.1 I had to deactivate h2 altogether, because a lot of subdomains and aliases errored out and were not reachable. I could have also reverted back to 2.4.23, which I will probably do in a couple of days. I couldn't do any problem determination on my production server. I had to make it work asap. I just wanted to mention that there's something off with h2. Since I only upgraded httpd from 2.4.23 to 2.5.25 w/o changing any configuration files, it must be a problem with the current h2 implementation. Cheers, K. C. -- regards Helmut K. C. Tessarek lookup http://pool.sks-keyservers.net for KeyID 0xC11F128D /* Thou shalt not follow the NULL pointer for chaos and madness await thee at its end. */