Hello
The i-mscp 1.2.17 default pasv_address is used wan ip address.But some server can't list directory in lan network.
The default setup like follow
Quotepasv_address=wan ip address
I change it.
Quotepasv_address=wan ip address
pasv_address=lan ip address
And restart vsftpd.It's can connect ftp with lan or wan.Please add in next version if it's can use.