Am 18.03.2026 um 12:25 schrieb Jörg Eichhorn: Hello,
I have installed proftpd to make use of check-file sftp extension. proftpd accepts config line: ``` SFTPExtensions +vendorID +checkFile +xattr ``` I see xattr extension as well as vendorID beeing enabled, but checkFile missing. When connecting, it is not reported:
At [1] I can read "All extensions except vendorID and xattr are enabled by default." The page reports more extensions, than these from your log file, e.g. limits. I'm not sure if the log is complete.
When using paramiko.sftp_file.SFTPFile.check anyways - the request won't be accepted: ```
I guess this your proof that, that the extension is really not activated, right?
Before opening a bug at upstream: do you have an unstable installation running 1.3.9 and could test if the issue is solved there? If needed I can provide backports for Debian stable.
Hilmar [1] http://www.proftpd.org/docs/contrib/mod_sftp.html#SFTPExtensions -- sigfault
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