ftp authentication fails

[fooboo]

I have been using ISPConfig for a while and I have had a number of working ftp accounts pointing at various sites.

The accounts were still working yesterday but today for some reason they stopped authenticating. I get a "530 Login authentication failed" message using saved account details that were working fine yesterday and if I use ISPConfig to setup a brand new user those details get the same error message.

The only thing I have done involving user accounts since yesterday is added an IP to mysql to allow a user to administer a couple of databases remotely.

Can this affect the ftp accounts?
Is there something I can try to get them working again? I definitely have the right connection details.

[fooboo]

It looks as though the users are still being found but their passwords are being rejected...despite being correct:

Command: USER <myuser>
Response: 331 User <myuser> OK. Password required
Command: PASS ******
Response: 530 Login authentication failed

[falko]

Did you modify your firewall?
Did you try both active and passive transfers in your FTP client?

[fooboo]

I didn't modify anything and the settings for my ftp client are exactly the same as when they were working. It's set to automatically try both types (I use filezilla).

I had working ftp accounts, modified mysql to allow remote access, started filezilla again and clicked on the same set of details and now it denies the password. I didn't change the firewall at all.

[till]

Enable verbose logging in pure-ftpd and then check the log for errors:

http://www.faqforge.com/linux/contro...-debian-linux/

[fooboo]

It finds the server and accepts the username so I'm assuming the firewall is letting it through, it's just the password it rejects.

[fooboo]

Hmm, my syslog isn't where that link thought it would be. I'll have to find it first :P
I use CentOS not Debian.