[plug] Sendmail - Smart host not working

[Andrew Carson]

Ryan (and anyone else that may be able to shed some light..)
First.. sorry about the size of this post!!!

The Exim box (what little logging it does) reports nothing of errors from
hosts trying to connect that shouldnt be... but then all of exims logging
seems very mimimal.  Some logs from the mail server (ThisHost)

[root at soliton3 spool]# mailq
                /var/spool/mqueue (2 requests)
---Q-ID------Size-- -----Q-Time-------------Sender/Recipient------------
h713ssg23377        5 Fri Aug  1 11:54 root
                 (host map: lookup (iinet.net.au): deferred)
                                       acarson at iinet.net.au




Aug  1 11:55:34 soliton3 sendmail[23377]: h713ssg23377: from=root, size=31,
class=0, nrcpts=0, msgid=<200308010354.h713ssg23377 at ThisHost.my.domain.com>,
relay=root at localhost
Aug  1 11:55:34 soliton3 sendmail[23377]: h713ssg23377:
to=acarson at iinet.net.au, delay=00:00:40, mailer=relay, pri=31, dsn=4.4.3,
stat=queued


And the mc file:


bash-2.05b$ cat sendmail.mc
divert(-1)
dnl This is the sendmail macro config file. If you make changes to this file,
dnl you need the sendmail-cf rpm installed and then have to generate a
dnl new /etc/sendmail.cf by running the following command:
dnl
dnl        m4 /etc/mail/sendmail.mc > /etc/sendmail.cf
dnl
include(`/usr/share/sendmail-cf/m4/cf.m4')
VERSIONID(`linux setup for Red Hat Linux')dnl
OSTYPE(`linux')
dnl Uncomment and edit the following line if your mail needs to be sent out
dnl through an external mail server:
define(`SMART_HOST',`[SmartHost.my.domain.com]')dnl
define(`confDEF_USER_ID',``8:12'')dnl
undefine(`UUCP_RELAY')dnl
undefine(`BITNET_RELAY')dnl
define(`confAUTO_REBUILD')dnl
define(`confTO_CONNECT', `1m')dnl
define(`confTRY_NULL_MX_LIST',true)dnl
define(`confDONT_PROBE_INTERFACES',true)dnl
define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl
define(`ALIAS_FILE', `/etc/aliases')dnl
dnl define(`STATUS_FILE', `/etc/mail/statistics')dnl
define(`UUCP_MAILER_MAX', `2000000')dnl
define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl
define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl
define(`confAUTH_OPTIONS', `A')dnl
dnl TRUST_AUTH_MECH(`DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
dnl define(`confAUTH_MECHANISMS', `DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
dnl define(`confTO_QUEUEWARN', `4h')dnl
dnl define(`confTO_QUEUERETURN', `5d')dnl
dnl define(`confQUEUE_LA', `12')dnl
dnl define(`confREFUSE_LA', `18')dnl
dnl FEATURE(delay_checks)dnl
dnl Next line to fix no DNS problem
define(`confSERVICE_SWITCH_FILE', `/etc/mail/service.switch')dnl
FEATURE(`no_default_msa',`dnl')dnl
FEATURE(`smrsh',`/usr/sbin/smrsh')dnl
FEATURE(`mailertable',`hash -o /etc/mail/mailertable.db')dnl
FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable.db')dnl
FEATURE(redirect)dnl
FEATURE(always_add_domain)dnl
FEATURE(use_cw_file)dnl
FEATURE(use_ct_file)dnl
dnl The '-t' option will retry delivery if e.g. the user runs over his quota.
FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl
FEATURE(`access_db',`hash -o /etc/mail/access.db')dnl
FEATURE(`blacklist_recipients')dnl
FEATURE(`nullclient', SmartHost.my.domain.com)dnl
EXPOSED_USER(`root')dnl
dnl This changes sendmail to only listen on the loopback device 127.0.0.1
dnl and not on any other network devices. Comment this out if you want
dnl to accept email over the network.
dnl ** Next line rem'd by AndrewC during initial install
dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')
dnl NOTE: binding both IPv4 and IPv6 daemon to the same port requires
dnl       a kernel patch
dnl DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6, Family=inet6')
dnl We strongly recommend to comment this one out if you want to protect
dnl yourself from spam. However, the laptop and users on computers that do
dnl not have 24x7 DNS do need this.
FEATURE(`accept_unresolvable_domains')dnl
FEATURE(`accept_unqualified_senders')dnl
dnl FEATURE(`relay_based_on_MX')dnl
MAILER(smtp)dnl
MAILER(procmail)dnl
CwThisHost.mydomain.com
bash-2.05b$







Cheers,
Andrew.


----- Original Email -----
From: Ryan <ryan at is.as.geeky.as>
To: plug at plug.linux.org.au
Date: 01-Aug-2003 12:15
Subject: Re: Re: [plug] Sendmail - Smart host not working

> On Fri, 2003-08-01 at 12:00, Andrew Carson wrote:
> > Thanks Ryan.. but no go.   I didnt originally have the nullclient
setting..
> > but just tried it then - and no dice :^(   I can report however, that
after
> > making the changes you suggested, my cf file turned out pretty much the
same
> > as yours.
> 
> Can we see some logs from the sendmail box?  Does the Exim server report
> any attempts from the sendmail host to connect?
> 
> Can we see the full sendmail.mc file?
> 
> Ryan