[opensuse-project] how to send e-mails with my opensuse.org e-mail address?

Hi, Can someone explain to me how to send e-mail with my opensuse.org e-mail address? The address itself is working fine: I can receive e-mails. But what SMTP server would I for sending? And how to authenticate? Greetings from Bremen hartmut -- hartmut meyer email: hartmut.meyer@web.de hermann-hesse-weg 15 mobil: 01522 9551345 28279 bremen telefon: 0421-3073650