SMTP Client - Berghoff SPS

[learnetk]

Hallo Everyone..
I am trying to use the SMTP_Client FB for sending Emails using a Berghoff EC2200 PLC with CoDeSys V3.5 SP6 Patch 3. I use the Demo Program in the Oscat Network library, with no changes except for the DNS. I get the ERROR_C = 16#FF and EROOR_T = 16#02. What library do i need for IP_Control for the Berghoff EC2200 PLC. I tried to use the SysSocket.lib, but that doesn't seem to work.
What else could be going wrong, could someone suggest.

Thanks & Regards

some more info :
I am using the OSCAT NETWORK version 1.2.1.1 library, and can ping mail.gmx.net from my PLC, and have also put the DNS Server address in the PLC. This DNS Server i find  with the nslookup command. Other than the DNS nothing has been changed in the DEMO Program.
Could someone help with this.Sorry to be writing in English.
ERROR_C = 16#FF, ERROR_T = 16#02
I tried this without using the SysSocket.lib (as i see that SysSocket23.lib is already a part of Oscat_network.lib) but i still get the same error.