On Sun, 2004-02-08 at 11:03, Pedro Fernandes Macedo wrote: > Do a ps aux |grep postfix ... If you see a process called master , then > it's running. Otherwise , do a tail -f /var/log/maillog and , with it > running , do a service postfix restart. You'll see on maillog all the > errors that are preventing you from running postfix.. > Also , you can do a cat /var/mail/username to see if a message sent to > an user called username really got through.. The simplest, most idiot-proof way to do this is have a tcpdump running on your external interface, sniffing tcp port 25. Have someone remotely telnet to your server's port 25. Look for a SYN packet. If a) their connection is immediately refused, or b) indefinitely times out, and c) you see nothing on your end, chances are good your ISP is blocking inbound SMTP. If you DO see traffic, then have them attempt a SMTP handshake. But first things first, verify you have actual TCP traffic making the transit. -- Jason Dixon, RHCE DixonGroup Consulting http://www.dixongroup.net
