TJ Saunders

@linuxsch Would it be possible to see the ProFTPD configuration you are using, and perhaps the [ProFTPD debug logging](http://www.proftpd.org/docs/howto/Debugging.html), debug level 10, generated from one of these failed uploads? Thanks!

What are the permissions/ownership on the target `/home/pftpuser/jckj/client/feifx//temp/test.txt` file? That is, what is the output from the following command? ```sh ls -aln /home/pftpuser/jckj/client/feifx /home/pftpuser/jckj/client/feifx/temp /home/pftpuser/jckj/client/feifx//temp/test.txt ``` Would also be possible...

Another possibility here is to disable the mod_vroot module, unless you really need it: ``` VRootEngine off ``` If disabling mod_vroot makes your upload work, then we know that the...

You might see if https://github.com/proftpd/proftpd/pull/1804 helps with the logging. Also, the fingerprints logged may depend on the SFTP client being used. For example, OpenSSH _may_ try all of the keys...

On pondering this more, I've closed the PR. Instead, I'm hoping you can provide the logging that you see, when a client authenticates using a public key, showing the fingerprint...

I'll ponder some option/way to configure the format/encoding used when logging these fingerprints. (The fact that `ssh-keygen` changed its format/encoding, without providing a way to select, is irritating.) I didn't...

> It is necessary to save the tls_ticket_key, but does it need to be regenerated for each reload? Generating a new key for encrypting TLS tickets, on each reload, helps...

Note that the `mod_tls` module _used_ to properly scrub the in-memory `mlock(2)`'d keys from memory, prior to https://github.com/proftpd/proftpd/pull/353. See [Bug#4260](http://bugs.proftpd.org/show_bug.cgi?id=4260) for the reasons why that behavior was changed.

> If you think this is a mechanism issue, I'll close this issue. For now, I'll close this. If/when more specific details about memory usage increases caused by repeated `SIGHUP`...

Unfortunately, we (the ProFTPD Project) don't maintain any ProFTPD packages for any distribution. You'd have to talk to the ProFTPD package maintainers for Debian/Ubuntu to see what goes into determining...