how can I configure a complete mailsever using suse linux

by using google

Yup. You're likely to find a great deal of information if you use a Google search. Try searching for: "suse postfix install howto". Postfix will be your SMTP but you'll need a POP3/IMAP solution. I'd recommend Dovecot. It's relatively easy and it works well.

Installing a mail server can be easy, especially with the packages being released for current Linux distros but you're still going to have to do some reading. If for no other reasons but to know what to configure during installation and how to troubleshoot stuff when it breaks (and unless you decide to install it then never use it, it will someday break one way or another).

Bill

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