[plug] Problems with Sendmail

[Mark O'Shea]

On Fri, 2005-01-07 at 11:48, J. Richard Mortimer wrote:
> Hi Folks,
> 
>  
> 
> I’ve been a long time Linux user, however I’ve been sucked back into
> the Windows world and my skillset in the *nix area is a little bit
> rusty.
> 
>  
> 
> I run a box at home, which is mainly for webserving my photos, and
> allows me to write some Perl scripts for various tasks and gives the
> “logic” side of my brain some food to munch on every now and again.
> This week I’d been updating some scripts and thought it would be nice
> to send some emails out to my WestNet account, rather than staying
> local and using POP3 to grab my email, as time at home seems limited
> these days. This is when all my dramas began.
> 
>  
> 
> I made a backup of my /etc directory, which was stored on a HD on
> another machine, however that machine has since died and I can’t get
> the information back – *sigh*, the data-gods have been against me so
> far this year.
> 
>  
> 
> The sendmail version is “Sendmail 8.12.5”, RHL version is “Linux
> webbot 2.4.18-14”.
> 
>  
> 
> Trying to send an email to the only user on the box results in an
> error message in the maillog stating:
> 
>  
> 
> Jan  7 11:07:41 neophytte sendmail[1781]: j0737fKV001781: from=root,
> size=630376, class=0, nrcpts=1,
> msgid=<200501070307.j0737fKV001781 at neophytte.mine.nu>,
> relay=root at localhost
> 
> Jan  7 11:07:41 neophytte sendmail[1781]: j0737fKV001781: to=mortimer,
> ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay,
> pri=30014, relay=neophytte.mine.nu. [202.72.154.34], dsn=4.0.0,
> stat=Deferred: Connection refused by neophytte.mine.nu.
> 
>  
> 
> Trying the verbose mode of sendmail gives me this:
> 
>  
> 
> [root at webbot mail]# sendmail -v mortimer
> 
> blah
> 
> .
> 
> mortimer... Connecting to neophytte.mine.nu. via relay...
> 
> mortimer... Deferred: Connection refused by neophytte.mine.nu.
> 
> [root at webbot mail]#
> 
>  
> 
> I’ve rebuilt the sendmail.cf file from the sendmail.mc file with the
> m4 command (as research has indicated I should do), but this error
> still persists. This is a copy of the sendmail.mc file:
> 
>  
> 
> [root at webbot mail]# 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/mail/sendmail.cf by running the following command:
> 
> dnl
> 
> dnl        m4 /etc/mail/sendmail.mc > /etc/mail/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',`mail.westnet.com.au')
> 
> define(`confDEF_USER_ID',``8:12'')dnl
> 
> undefine(`UUCP_RELAY')dnl
> 
> undefine(`BITNET_RELAY')dnl
> 
> 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(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
> 
> dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5
> LOGIN PLAIN')dnl
> 
> dnl define(`confCACERT_PATH',`/usr/share/ssl/certs')
> 
> dnl define(`confCACERT',`/usr/share/ssl/certs/ca-bundle.crt')
> 
> dnl define(`confSERVER_CERT',`/usr/share/ssl/certs/sendmail.pem')
> 
> dnl define(`confSERVER_KEY',`/usr/share/ssl/certs/sendmail.pem')
> 
> dnl define(`confTO_QUEUEWARN', `4h')dnl
> 
> dnl define(`confTO_QUEUERETURN', `5d')dnl
> 
> dnl define(`confQUEUE_LA', `12')dnl
> 
> dnl define(`confREFUSE_LA', `18')dnl
> 
> define(`confTO_IDENT', `0')dnl
> 
> dnl FEATURE(delay_checks)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
> 
> 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 -T<TMPF> -o /etc/mail/access.db')dnl
> 
> FEATURE(`blacklist_recipients')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.
> 
> 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.
> 
> dnl FEATURE(`accept_unresolvable_domains')dnl
> 
> dnl FEATURE(`relay_based_on_MX')dnl
> 
> MAILER(smtp)dnl
> 
> MAILER(local)dnl
> 
> MAILER(uucp)dnl
> 
> dnl MAILER(procmail)dnl
> 
> Cwlocalhost
> 
>  
> 
> [root at webbot mail]#
> 
>  
> 
> From what I understand from my research, the Cw command on the last
> line is where the mail will be sent, which should be localhost,
> however as shown by the log snippet it’s trying to send to it’s own
> name and refusing the connection.
> 
>  
> 
> Is anyone able to stop my poor brain from aching over this? My primary
> goal is to get local email working, although being able to send via
> the WestNet mail system would be the ultimate goal.
> 
>  
> 
> Thanks, Happy New Year to all!
> 
>  
> 
> Richard
> 
>  
Hi again Richard,

Having read through your message again it looks like I might have
missunderstood what you are trying to do.  Are you trying to send mail
locally (ie, you want sendmail to connect to itself via localhost rather
than eth0)?  And are you hoping to be able to send mail externally
relaying through westnet's email servers?  Or hoping to send mail
directly to the recipient's mail server?

-- 
Mark O'Shea