A rogue application may be periodically fighting Imail for the outgoing
smtp port
There isn't a single "outgoing SMPT port", the TCP application will
ask the OS for a free (non-privileged, > 1024) TCP port (unless you
force the app always to use the same outbound/source port), and get
handed whatever TCP the OS has in its list of available ports.
You can see this easily with:
netstat -an
... which shows <local IP>:port connecting outbound to <remote
IP>:25, where ":port" is any random port number above :1023.
The conflict over a port is only for apps that listen/in-bound
continuoyulsy on a well-known port, like :25 or :587.
, or you may have a shady NIC. During this period of outage,
are you able to telnet your local IP and if so, what answers?
telnetting to port 25/inbound won't say anything about his
outbound/delivery problems.
Len
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