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paulbot75
July 22nd, 2009, 11:54
Hi all,

I'm using freebsd 7.2 vanilla install

I'm a complete bsd newbie. I'm having trouble connecting to sendmail on anything but the local host. Sockstat -4 shows:

root sendmail ... 127.0.0.1:25

When I nmap from another host on the lan I don't see an entry for port 25 (I do see 110,143).

I'm assuming that a firewall is blocking the port. I understand that there are a variety of FreeBSD firewalls available. How do I tell what firewall I'm running?

Cheers,
DutchDaemon
July 22nd, 2009, 12:09
Vanilla installs don't run firewalls. You're running Sendmail on localhost, which means it's not accessible from the outside. In order to have Sendmail listening on your external interface, you'll need to add 'sendmail_enable="YES"' to /etc/rc.conf and run /etc/rc.d/sendmail start.

See also:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/sendmail.html
http://www.freebsd.org/cgi/man.cgi?query=sendmail&sektion=8
http://oreilly.com/catalog/9780596510299/
SirDice
July 22nd, 2009, 12:16
Sendmail is only listening on the localhost interface lo0. You cannot access this interface from outside the host.
bb
July 22nd, 2009, 13:51
When I nmap from another host on the lan I don't see an entry for port 25 (I do see 110,143).


A nice tip: Use the following command on FreeBSD


sockstat -46l


before running nmap from another host. It will give you a better idea of what could actually be found by nmap.
DutchDaemon
July 22nd, 2009, 14:34
Or sockstat -46 if you don't want to be confused by localhost ..
paulbot75
July 22nd, 2009, 22:11
I've found the problem... but I have no idea how to fix it. The problem is that sendmail is crashing shortly after it starts:

NOQUEUE: SYSERROR(root): opendaemonsocket: daemon IPv4 cannot bind: Address already in use

NOQUEUE: SYSERROR(root): opendaemonsocket: daemon server SMTP socket wedged: exiting

I know this is no longer a firewall issue... but any thoughts?
bb
July 22nd, 2009, 22:34
did you try


/etc/rc.d/sendmail restart


?
SirDice
July 23rd, 2009, 07:29
I've found the problem... but I have no idea how to fix it. The problem is that sendmail is crashing shortly after it starts:

NOQUEUE: SYSERROR(root): opendaemonsocket: daemon IPv4 cannot bind: Address already in use

NOQUEUE: SYSERROR(root): opendaemonsocket: daemon server SMTP socket wedged: exiting

I know this is no longer a firewall issue... but any thoughts?

It doesn't crash. It complains there's already something that opened port 25.