Name of protected directory for domain statistics is changed after migration
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Scheduled backup fails: The dump has content errors!
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Migrator shows warning: MySQL database with the name 'dbname' already exists on target server when there is no such database on the target server
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See more

FTP connection does not work on Plesk: FTP 550 SSL/TLS required on the control channel

Alexandr Tumanov

Updated January 14, 2019 09:52

Applicable to:

Plesk Onyx for Linux
Plesk 12.5 for Linux
Plesk 12.0 for Linux
Plesk 11.x for Linux

Symptoms

Unable to connect to FTP server on Plesk:

# ftp domain.tld 21
550 SSL/TLS required on the control channel
Login failed.
Remote system type is UNIX.
Using binary mode to transfer files.

Cause

Allow only secure FTPS connections option is enabled.

Resolution

Log into Plesk
Set Allow both secure FTPS and non-secure FTP connections in
Plesk > Tools & Settings > Security Policy

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