fc3, sendmail, dovecot: cannot receive from outside

rado rado at rivers-bend.com
Wed Mar 9 13:30:18 UTC 2005


> > > ...sorry if I confused you; let me see if I can clarify.
> > > 
> > > rivers-bend.com is my domain w/a public ip of 209.205.179.141
> > > 
> > > This box right here is rbmain1 [10.0.0.10] running on fc2 which is fully
> > > updated. It's running dns, sendmail 8.12.11-4.6, dovecot, and other
> > > things w/no problems.
> > > 
> > > the box w/problems is rbmain2 [10.0.0.12] running on fc3 w/no updating
> > > yet.
> > > My intentions are to mirror 10.0.0.10 w/10.0.0.12. After it's all set
> > > up, I'll probably use rsync or something to sync up the 2 machines and
> > > if/when 10.0.0.10 ever goes down, just run a script on 10.0.0.12 and it
> > > will take over.
> > > 
> > > Now, while setting 10.0.0.12 up, presently I shut down 10.0.0.10 because
> > > I don't have scripts in place yet. While 10.0.0.10 is down, dns in
> > > 10.0.0.12 takes over and works fine. 
> > > 
> > > Now the problem: using evolution, I can mail to myself i.e. from:
> > > rado at rivers-bend.com to:rivers-bend.com and it will pop fine.
> > > I can send mail out to my hotmail acct: radopowder at hotmail.com, and it
> > > is received...I reply from hotmail to rado at rivers-bend.com, and it never
> > > comes. Mind you this is in the fc3 sys, [10.0.0.12].
> > > ok, let's shut down 10.0.0.12 now.
> > > 
> > > bring up 10.0.0.10... that's this box. the email reply that I was trying
> > > to receive in 10.0.0.12 shows up here in 10.0.0.10. 
> > > 
> > > Somehow mail is being stopped from being received on 10.0.0.12.
> > > here's a list of my open ports:
> > > 
> > > [root at rbmain2 ~]# nmap -sT rbmain2
> > > 
> > > Starting nmap 3.70 ( http://www.insecure.org/nmap/ ) at 2005-03-09 08:05
> > > CST
> > > Interesting ports on rbmain2.rivers-bend.com (10.0.0.12):
> > > (The 1654 ports scanned but not shown below are in state: closed)
> > > PORT    STATE SERVICE
> > > 22/tcp  open  ssh
> > > 25/tcp  open  smtp
> > > 53/tcp  open  domain
> > > 110/tcp open  pop3
> > > 111/tcp open  rpcbind
> > > 113/tcp open  auth
> > > 
> > > Nmap run completed -- 1 IP address (1 host up) scanned in 0.283 seconds
> > >  
> > > Don't forget, Alexander, 10.0.0.12 is only up while I'm working on it.
> > > when I need to check email like this msg list, I have to shut down
> > > 10.0.0.12 and bring up this machine, 10.0.0.10. I also monitor my
> > > hotmail acct. regularly radopowder at hotmail.com which could be used for
> > > testing communication. That's always up.
> > > 
> > > Ok, I hope this clears it up. Alexander, if you want to see logs or
> > > testing please just ask. 
> > > thx,
> > > John Rose
> > > 
> > > -- 
> > > Trust Everyone. Just make sure you brand your cattle.
> > > 
> > > 
> > 
> > John,
> > 
> > What happens if you set the IP address of your FC3 box to 10.0.0.10?
> > 
> > Earlier you said that you were not running NAT, how can this be if you
> > are using a 10.x.x.x private IP addresses?  On my DSL modem I must
> > either pass-thru it's public IP to my Linux host or pass port 25 traffic
> > to the masqueraded IP address.
> > 
> > Bob...
> > 
> > Hi Bob,
> ok...the problem box, 10.0.0.12 points to 127.0.0.1 as it's dns server.
> this box, 10.0.0.10 points to 127.0.0.1 as it's dns server.
> mind you only 1 of the 2 boxes is running at any given time right now.
> I could and have done it another way...that's to shut all the servers
> down in one box and start all the servers back up in the other box and
> tweak the dns server in both boxes but it's just easier and simpler to
> just shut one box down and bring the other up.
> 
> now then..no, I do NOT run nat...since I only am using 1 static
> ip(209.205.179.141), I just have my dns server(s) do it all. I have both
> machines serving dns by using a "split" dns server. my config file for
> each is set up in "views"  inside and outside. both the dns servers are
> basically the same. the zones are tweaked to point to their respective
> machines and the static ip points to the box that it's running on. 
> lol now to confuse this issue more lol, my slave server set up in my 2
> dns systems is my ip. I know that traffic is coming in #53 because of
> the notify and reply back from my slave when I change the sn on zone
> files.
> 
> hope this clears that point up for ya.
> 
> thx for your interest, Bob.
> 
> john rose
> 
> -- 
> The only times my computer fails to come on is after I shut it off.
> 
> 
> 
> ------------------------------
ok here are log statements from last activity in 10.0.0.12:
rom messages: last startup
 
Mar  9 12:34:11 rbmain2 dovecot: dovecot startup succeeded
Mar  9 12:34:12 rbmain2 rc: Starting hpoj:  succeeded
Mar  9 12:34:16 rbmain2 named[2373]: starting BIND 9.2.4 -u named -t
/var/named/chroot
Mar  9 12:34:16 rbmain2 named[2373]: using 1 CPU
Mar  9 12:34:16 rbmain2 named: named startup succeeded
Mar  9 12:34:16 rbmain2 named[2373]: loading configuration from
'/etc/named.conf'
Mar  9 12:34:16 rbmain2 named[2373]: listening on IPv4 interface lo,
127.0.0.1#53
Mar  9 12:34:16 rbmain2 named[2373]: listening on IPv4 interface eth0,
10.0.0.12#53
Mar  9 12:34:16 rbmain2 named[2373]: command channel listening on
127.0.0.1#953
Mar  9 12:34:16 rbmain2 named[2373]: zone 0.0.10.in-addr.arpa/IN: loaded
serial 2005030701
Mar  9 12:34:16 rbmain2 named[2373]: zone rivers-bend.com/IN: loaded
serial 2005030701
Mar  9 12:34:16 rbmain2 named[2373]: zone localhost/IN: loaded serial 42
Mar  9 12:34:16 rbmain2 named[2373]: zone rivers-bend.com/IN: loaded
serial 2005030701
Mar  9 12:34:16 rbmain2 named[2373]: running
Mar  9 12:34:16 rbmain2 named[2373]: zone rivers-bend.com/IN: sending
notifies (serial 2005030701)
Mar  9 12:34:16 rbmain2 named[2373]: zone rivers-bend.com/IN: sending
notifies (serial 2005030701)
Mar  9 12:34:16 rbmain2 named[2373]: received notify for zone
'rivers-bend.com'
Mar  9 12:34:16 rbmain2 sshd:  succeeded
Mar  9 12:34:17 rbmain2 sendmail[2415]: sql_select option missing
Mar  9 12:34:17 rbmain2 sendmail[2415]: auxpropfunc error no mechanism
available 
Mar  9 12:34:17 rbmain2 sendmail: sendmail startup succeeded
Mar  9 12:34:17 rbmain2 sendmail: sm-client startup succeeded
------------------------------------------------------------------------
maillog

Mar  9 12:34:11 rbmain2 dovecot: Dovecot starting up
Mar  9 12:34:17 rbmain2 sendmail[2411]: alias database /etc/aliases
rebuilt by root
Mar  9 12:34:17 rbmain2 sendmail[2411]: /etc/aliases: 78 aliases,
longest 10 bytes, 802 bytes total
Mar  9 12:34:17 rbmain2 sendmail[2416]: starting daemon (8.13.1):
SMTP+queueing at 01:00:00
Mar  9 12:34:17 rbmain2 sm-msp-queue[2425]: starting daemon (8.13.1):
queueing at 01:00:00
Mar  9 12:39:41 rbmain2 sendmail[3589]: j29Idc6D003589:
from=<rado at rivers-bend.com>, size=305, class=0, nrcpts=1,
msgid=<1110393578.3563.0.camel at rbmain2.rivers-bend.com>, proto=ESMTP,
daemon=MTA, relay=rbmain2.rivers-bend.com [10.0.0.12]
Mar  9 12:39:43 rbmain2 sendmail[3592]: j29Idc6D003589:
to=<radopowder at hotmail.com>, ctladdr=<rado at rivers-bend.com> (500/500),
delay=00:00:02, xdelay=00:00:02, mailer=esmtp, pri=120305,
relay=mx2.hotmail.com. [65.54.166.230], dsn=2.0.0, stat=Sent (
<1110393578.3563.0.camel at rbmain2.rivers-bend.com> Queued mail for
delivery)
Mar  9 12:39:57 rbmain2 pop3-login: Login: rado [10.0.0.12]
Mar  9 12:40:57 rbmain2 pop3-login: Login: rado [10.0.0.12]

as the mail log showed, it sent a msg to my hotmail account,
radopowder at hotmail.com. I went to that account and replied to that msg.
...waited ample time for the msg to get back to rivers-bend.com and
never did. Now, while writing this msg, that reply shows up here on this
box. sigh

incidently, to make it even more confusing, I'm gonna duck when I tell
y'all this, but my ip connection is NOT bridged...but PPPoE, granted,
normally there is no static ips w/a PPPoE connection but seeing that my
ISP and I have been knowing each other and have been friends since
before dirt. As a friend deal, he just guarantees me that it will be
static. But really, this has nothing to do w/the problem at hand.

thx y'all

john rose
-- 
Trust Everyone. Just make sure you brand your cattle.




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