Does courier-imap do smtp? Sendmail doesn't listen for outside mail by
default, but in some cases it does listen on port 25 witout accepting
connections. look at /etc/rc.conf and see what you have enabled.
(firewall, courier and sendmail related variables)
On Fri, 17 Dec 2004, Curtis Vaughan wrote:
On 17 Dec, 2004, at 09:24, Curtis Vaughan wrote:
I realized that apparently by default most all ports are closed on my
5.3-Release box. The reason I say this is because besides port 22, 80 and
10000 no other port seems to be open (based on a port scan). I just
installed postfix and courier-imap and wanted to test ports 25 and 110, but
they do not respond even though postfix is running, I have enabled the
ports in master.cf. Also they are in /etc/services.
Looking over documents and checking my install, /etc/rc.firewall is not
enabled in /etc/defaults/rc.conf.
I assume I could go through rc.firewall and set it up for those ports I
need opened, and enable it in rc.conf, but whereas we have a
gatewall/firewall for our company, I don't see a lot of
reason for having all the ports closed down on this server. Is there an
easy way to enable them all?
Curtis
OK, I've got courier-imap running now and it opened port 143, but there is
still no reply on 25. Which makes me think that the problem isn't the fact
that ports are closed, but that nothing is listening.
However, netstat shows:
cod# netstat -na | grep LISTEN
tcp4 0 0 *.143 *.* LISTEN
tcp6 0 0 *.143 *.* LISTEN
tcp4 0 0 *.80 *.* LISTEN
tcp4 0 0 *.25 *.* LISTEN
tcp4 0 0 *.10000 *.* LISTEN
tcp4 0 0 *.22 *.* LISTEN
tcp6 0 0 *.22 *.* LISTEN
So, something is listening on port 25, but why no response to telnet
requests?
Curtis
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