Hi, I have the most ugly problems using DNS. I have three internal networks and one external (connected to Internet). I don't run named and my nameservers are those of my ISP. Whenever I connect to my box with pop3, the messages are: Unable to find canonical name of client (err=2). This is no surprise, since my internal IP's are not known to the nameservers outside. But when email is beeing sent to my box, sendmail suddenly says: 'Sender domain must resolve' and 'Sender domain must exist'. Why is this? And why did it work before? Are the nameservers of my ISP malfunctioning? I've never had this with RedHat or Debian, why SuSE? Is there something different in configurating SuSE? I hope anyone can give me some pushes in the right direction, because this is driving me crazy. Thanks. Rogier -- To unsubscribe send e-mail to suse-linux-e-unsubscribe@suse.com For additional commands send e-mail to suse-linux-e-help@suse.com Also check the FAQ at http://www.suse.com/Support/Doku/FAQ/