doug wrote: > > On Mon, 21 May 2007, Maxim Khitrov wrote: > >> On 5/21/07, Mikhail Goriachev <[EMAIL PROTECTED]> wrote: >>> Maxim Khitrov wrote: >>>> Hello, >>>> >>>> I'm trying to restrict access to sendmail via hosts.allow. Don't need >>>> a firewall, since I just want to block everyone but the localhost from >>>> sending e-mail out. Anyway, it seems that sendmail ignores these >>>> settings even though it was compiled with TCPWRAPPERS. I added >>>> "sendmail : all : deny" as the very first line in hosts.allow, just to >>>> see if it will let me connect from anywhere. It does - not just from >>>> localhost, but from all remote locations as well. I have no problems >>>> connecting and sending e-mail. Am I missing something? >>> I followed your earlier thread (hopefully this is a related topic). This >>> is strange. By default, sendmail is disabled. You don't even have to put >>> anything into rc.conf: >>> >>> # grep sendmail /etc/defaults/rc.conf >>> >>> Sendmail listens and accepts local mail only. You can't connect to it >>> from another machine: >>> >>> # telnet some.host.tld 25 >>> Trying 1.2.3.4... >>> telnet: connect to address 1.2.3.4: Connection refused >>> telnet: Unable to connect to remote host >>> >>> You must've tweaked something to make it behave differently. >>> >>>> I tested the same setup with sshd, and that works properly. After a >>>> quick search on google it seems that I'm not the only one with this >>>> problem, but I couldn't find any solution to this. Any help is greatly >>>> appreciated. >>> Share with us your testing methodology. From previous thread, I >>> understand that you just want something to submit your local mail (from >>> daemons, scripts, etc). Then as others already said, a simple alias in >>> /etc/mail/aliases and executing newaliases is sufficient. >> Ok, so here's my current setup. I have sendmail_enable="NO" in rc.conf >> (same as not having it there I guess), I've modified /etc/mail/aliases >> to forward everything sent to root to my gmail account, and I added >> "sendmail : all : deny" as the first line to /etc/hosts.allow while >> I'm testing everything. Once I make sure that the deny rule works, >> I'll allow access to sendmail only from localhost. This is all on >> FreeBSD 6.2, but it's running in a jail, so that might have some >> effect. > > sendmail_enable="NO" means there is no sendmail daemon running. You can > verify > this via "ps -aux | grep sendmail". Remove that statement. Without a reboot > you > can start sendmail by cd /etc/mail; make start.
sendmail_enable="NO" tells sendmail to bind to localhost only (hence it becomes unreachable from the outside): # sockstat -4l | grep sendmail root sendmail 42310 4 tcp4 127.0.0.1:25 *:* sendmail_enable="YES" starts/adds the submit capability: # sockstat -4l | grep sendmail root sendmail 42262 4 tcp4 *:25 *:* root sendmail 42262 5 tcp4 *:587 *:* In both cases, executing ps -aux shows sendmail daemon is running. The first knob is the default as per /etc/defaults/rc.conf > Unless you have changed the freebsd.mc file and done a 'make install' I do > not > believe sendmail will accept from any connections except except on 127.0.0.1 > (localhost). This is what you want I think. If that's it as others have said, > there is no reason to use the hosts.allow mechanism. This is independent of > the > jail environment. > > sockstat|grep sendmail > > and you can see whats going on. -- Mikhail Goriachev Webanoide Telephone: +61 (0)3 62252501 Mobile Phone: +61 (0)4 38255158 E-Mail: [EMAIL PROTECTED] Web: www.webanoide.org _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
