WinSCP works with IP address but not name of server

Hello

I'm using WinSCP with version 5.13. When I try to connect from the GUI to a server over SFTP port 22 it only works when I enter the IP address, but not with the server name. DNS resolution works without any issue on the server. I have no problem to connect to other apps like putty with name. Anyone has the same issue?

Regards
o4

Please attach a complete WinSCP session log file as well as PuTTY event log.

Hello Martin

The putty log is not meaningful, I have two identical servers (one works WinSCP with name one not) I attach both log files. It seems WinSCP is not using DNS servers.

Regards
o4

Please attach the PuTTY log too.

Here is the putty log ...

Cannot you show us the hostname?