sendmail server and find smtp

[benp07]

i am running sendmail with mandrake 8.1 i can send mail and recieve mail with my linux box and on the windows boxs i can send and recieve both of the boxs are on the same network but when i try to log in to the server from outside the network i can recieve but cant send out i get and smtp error all the ports are mapped right i used webmin to up the server is there something that is timing out or is there some other problem please help thanks for your time
Ben

 

[Guest_imported]

If you say "outside the network" are you dialling into the office or are you dialing into an ISP and accessing the server over the internet? Is there a fire wall/proxy server in between?

Best advise I can give at this stage is to double check that the client is using port 25, that you are using a registered IP address if going over the internet (looks like you are if POP3 is working ok), that port 25 is open on the fire wall or check to see if your proxy server can NAT to the mail server, make sure your server is listening on port 25

 

[bgarlock]

Check access to that port from the "outside" by doing this:

telnet server.com 25

If you get a header with the MTA's identification, then the firewall is passing traffic to the server. Bruce Garlock
bruceg@tiac.net

http://bruceg.dyndns.org