FTP Accounts username mask

[Michal_Bayer]

Hello

I use 12.0.18 Debian 7.0 1200150126.15

Can I have possibility to define mask of allowed symbols in "New Additional FTP Account"? I'm migrating a few accounts that use username like this:
User1-domain.com

I don't see anything bad on that username.

I tried to create usernames through web page and also through command:

# /opt/psa/bin/ftpsubaccount --create User1-domain.com -domain domain.com -passwd mypass
Unable to create FTP account: You specified incorrect username.

Is there any solution, please?

 

[IgorG]

You can't use uppercase symbols in ftp username. Use user1-domain.com

 

[Michal_Bayer]

Is there any possibility uppercase characters in ftp username can be allowed?
I feel that mixing uppercase and lowercase in ftp username is safer.

 

[IgorG]

It is impossible because of Linux restriction for names of system users.

 

[Michal_Bayer]

It makes sense. Ok, thank you for your answer Igor.