Switching to python 2.4.1 cured the problem. Steve McMahon wrote:
I've having trouble getting FTP working on a new Zope install. All other Zope functions appear normal, but I'm unable to transfer files _to_ Zope via FTP. I can use FTP to download files from the Zope server and can create new directories on the server. But attempts to transfer files to the server all result in "426 Error creating file" errors.
ftp> put test.html 200 PORT command successful. 150 Opening ASCII connection for test.html 426 Error creating file.
The problem is not a firewall problem; I can reproduce it with local ftp sessions and with no firewall in place.
I've tried several Zope versions from 2.6 to 2.7.7. All have the same problem. Common to the attempts is that they were all source builds with Python version 2.3.3 (#1, Mar 10 2004, 06:42:32) [GCC 3.3.2] on Solaris 10 on a dual-Opteron Sun V20Z. I'd be happy to update the Python version if anyone thinks that might cure the problem.