IP Adress resolution failes

[File91]

Hi,

somehow the IP-Adress Resolution fails (IPv4).
So, I have an FTP Server on my Synology running. If I access the FTP via Filezilla with the correct IPv4-adress it works perfectly.
But if I use the servername in Filezilla, Filezilla cannot resolve the correct IP adress. Somehow Filezilla uses the IPv4 from yesterday - obviously it does not work today.

How can I help Filezilla to update/resolve the IP Adress?

Probably the solution is pretty simple, but I couldn´t find it in the forum yet.

Thanks for every hint!

[botg]

FileZilla itself does not cache IP addresses. It asks the operating system to resolve the hostname into an IP address.

[File91]

Thanks for the info.
So where might be the problem of my OS? (Windows 10)

[boco]

Does your router add a DNS suffix (find out with ipconfig /all)? If yes, you might need to specify it, like nasname.suffix instead of just nasname.