>From the docs, there's a variable in server.tab which will test MAIL FROM domains against DNS, to prevent people relaying using dodgy return paths. Any chance you have this switched on?
Yes. I have it switched on and to a real dns. I thought it was for relaying to other smtp servers... Thanks!!! :) Strange thing: Now i got another error on the same spot: When i am logging in to smtp server: It goes like this: <-HELO mydomain.com ->250 <-MAIL FROM: [EMAIL PROTECTED] ->451 Requested action aborted: (-20) local error in processing -20 seem to be som error in the file structure according to "errors.h"..? I think my filestructure and rights are set accordingly to to readme.txt. I must have missed something... /Christian - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]