Originally Posted by till
Have you thought about my solution posted above? Normally every DSL Provider has Mailservers that can be used as mailrelay from the clients. Why not configure your postfix to send all outgoing email trough this mailserver from your DSL Provider?
Actually I didn't think about it but if it will resolve this embarrassment, I can try it. I'm in Webmin now under Postfix Configuration
--> General Options
. There is a setting: What domain to use in outbound mail
. I would enter my ISP mail server there?
And also there is another setting in the Other General Options
. it is labled: Send outgoing mail via host
I would again enter my ISP mail server there?