Wow, thanks! I guess that is it. I am able to connect the provider's mailserver at port 25.
Thanks, Sebastiaan On Tue, 14 Nov 2000 [EMAIL PROTECTED] wrote: > Sebastiaan <[EMAIL PROTECTED]> writes: > > > I have just installed Postfix mailerdeamon, and now I am unable to send > > email out of the network. After searching, I discovered that I am also > > unable to telnet to the smtp port of the delivery-mailserver. That is: > > > > $ telnet mail.somewhere.nl 25 > > Trying 194.... > > > > and then it hangs. It is with every mailserver I tried. Other ports work > > correct. What is going on? Has it something to do with my Postfix > > configuration? > > I had something like this happen to me last month. I found out the reason > this is happening is because my ISP is blocking SMTP connections to any > other ISP but their own at the router. They are doing this to stop > Spam. While this may be a pain in the ass, it does help cut down Spam. > > Ian > >