[TriLUG] sendmail question
Jon Carnes
jonc at nc.rr.com
Sat Apr 5 18:53:20 EST 2003
You can have it force the proper domain name on outgoing mail by putting
this in your /etc/mail/sendmail.cf file:
#Dj$w.Foo.COM
Djcanismajor.org
Good Luck - Jon Carnes
On Sat, 2003-04-05 at 17:54, mike wrote:
> On Sat, 2003-04-05 at 17:28, Jon Carnes wrote:
> > Well that log entry says that it passed the mail off to
> > smtp-server.nc.rr.com. So according to the logs it is working.
> >
> > You say that you can receive mail. So if I send a note to
> > mike at redhat1.canismajor.org it will get to you?
> >
> This is where I thought the problem may lay. The mail address should be
> mike at canismajor.org so it maybe that I have something set incorrectly.
>
> Mike
>
>
> > Looking at the DNS setup, only canismajor.org can accept mail. So your
> > mail is going to:
> > canismajor.org mail exchanger = 10 canismajor.org.
> > canismajor.org mail exchanger = 90 smtp.easydns.com.
> > canismajor.org mail exchanger = 100 smtp2.easydns.com.
> >
> > You must be picking your mail up from one of those servers (or
> > forwarding it on from one of those servers to your own).
> >
> > ===
> > To make sure that your smtp forwarding is working properly, try to
> > telnet on port 25 from the server to smtp-server.nc.rr.com:
> > telnet smtp-server.nc.rr.com 25
> >
> > ===
> > Sendmail comes setup almost completely for you, so if you setup the DNS
> > properly, then it should simply work.
> >
> > Jon Carnes
> >
> > On Sat, 2003-04-05 at 15:58, mike wrote:
> > > OK so I'm new to sendmail and having a problem getting it set up. I can
> > > receive mail fine but cannot send mail. An entry from the log file for
> > > one of the times I've tried to send a message looks like the following:
> > >
> > > Apr 5 15:42:26 REDHAT1 sendmail[2127]: h35KgPuB002125:
> > > to=<wigglefish2003 at yahoo.com>, ctladdr=<mike at REDHAT1.canismajor.org>
> > > (500/500), delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=30664,
> > > relay=smtp-server.nc.rr.com [24.93.67.206], dsn=2.0.0, stat=Sent
> > > (09de80838200543FE4 Queued mail for delivery)
> > >
> > > I'm including the config files below. I'm sure it's something simple
> > > that I'm doing wrong but I don't know how to fix it. Any help would be
> > > greatly appreciated.
> > >
> > >
> > > /etc/mail/access looks like the following:
> > >
> > > localhost.localdomain RELAY
> > > localhost RELAY
> > > 127.0.0.1 RELAY
> > > canismajor.org RELAY
> > > REDHAT1.canismajor.org RELAY
> > >
> > >
> > > /etc/mail/local-host-names looks like the following:
> > >
> > > canismajor.org
> > > REDHAT1.canismajor.org
> > >
> > > /etc/hosts looks like the following:
> > >
> > > 127.0.0.1 localhost.localdomain localhost
> > > 192.168.0.2 REDHAT1.canismajor.org REDHAT1
> > >
> > >
> > > /etc/mail/sendmail.mc looks like the follwing:
> > >
> > > divert(-1)dnl
> > > dnl #
> > > dnl # This is the sendmail macro config file for m4. If you make changes
> > > to
> > > dnl # /etc/mail/sendmail.mc, you will need to regenerate the
> > > dnl # /etc/mail/sendmail.cf file by confirming that the sendmail-cf
> > > package is
> > > dnl # installed and then performing a
> > > dnl #
> > > dnl # make -C /etc/mail
> > > dnl #
> > > include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
> > > VERSIONID(`setup for Red Hat Linux')dnl
> > > OSTYPE(`linux')dnl
> > > dnl #
> > > dnl # Uncomment and edit the following line if your outgoing mail needs
> > > to
> > > dnl # be sent out through an external mail server:
> > > dnl #
> > > define(`SMART_HOST',`smtp-server.nc.rr.com')
> > > dnl #
> > > define(`confDEF_USER_ID',``8:12'')dnl
> > > define(`confTRUSTED_USER', `smmsp')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 #
> > > dnl # The following allows relaying if the user authenticates, and
> > > disallows
> > > dnl # plaintext authentication (PLAIN/LOGIN) on non-TLS links
> > > dnl #
> > > dnl define(`confAUTH_OPTIONS', `A p')dnl
> > > dnl #
> > > dnl # PLAIN is the preferred plaintext authentication method and used by
> > > dnl # Mozilla Mail and Evolution, though Outlook Express and other MUAs
> > > do
> > > dnl # use LOGIN. Other mechanisms should be used if the connection is
> > > not
> > > dnl # guaranteed secure.
> > > 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 #
> > > dnl # Rudimentary information on creating certificates for sendmail TLS:
> > > dnl # make -C /usr/share/ssl/certs usage
> > > 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 #
> > > dnl # This allows sendmail to use a keyfile that is shared with
> > > OpenLDAP's
> > > dnl # slapd, which requires the file to be readble by group ldap
> > > dnl #
> > > dnl define(`confDONT_BLAME_SENDMAIL',`groupreadablekeyfile')dnl
> > > 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
> > > 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
> > > FEATURE(always_add_domain)dnl
> > > FEATURE(use_cw_file)dnl
> > > FEATURE(use_ct_file)dnl
> > > dnl #
> > > dnl # The -t option will retry delivery if e.g. the user runs over his
> > > quota.
> > > dnl #
> > > 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 #
> > > dnl # The following causes sendmail to only listen on the IPv4 loopback
> > > address
> > > dnl # 127.0.0.1 and not on any other network devices. Remove the
> > > loopback
> > > dnl # address restriction to accept email from the internet or intranet.
> > > dnl #
> > > DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
> > > dnl #
> > > dnl # The following causes sendmail to additionally listen to port 587
> > > for
> > > dnl # mail from MUAs that authenticate. Roaming users who can't reach
> > > their
> > > dnl # preferred sendmail daemon due to port 25 being blocked or
> > > redirected find
> > > dnl # this useful.
> > > dnl #
> > > dnl DAEMON_OPTIONS(`Port=submission, Name=MSA, M=Ea')dnl
> > > dnl #
> > > dnl # The following causes sendmail to additionally listen to port 465,
> > > but
> > > dnl # starting immediately in TLS mode upon connecting. Port 25 or 587
> > > followed
> > > dnl # by STARTTLS is preferred, but roaming clients using Outlook
> > > Express can't
> > > dnl # do STARTTLS on ports other than 25. Mozilla Mail can ONLY use
> > > STARTTLS
> > > dnl # and doesn't support the deprecated smtps; Evolution <1.1.1 uses
> > > smtps
> > > dnl # when SSL is enabled-- STARTTLS support is available in version
> > > 1.1.1.
> > > dnl #
> > > dnl # For this to work your OpenSSL certificates must be configured.
> > > dnl #
> > > dnl DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl
> > > dnl #
> > > dnl # The following causes sendmail to additionally listen on the IPv6
> > > loopback
> > > dnl # device. Remove the loopback address restriction listen to the
> > > network.
> > > dnl #
> > > dnl # NOTE: binding both IPv4 and IPv6 daemon to the same port requires
> > > dnl # a kernel patch
> > > dnl #
> > > dnl DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6, Family=inet6')dnl
> > > dnl #
> > > dnl # We strongly recommend not accepting unresolvable domains if you
> > > want to
> > > dnl # protect yourself from spam. However, the laptop and users on
> > > computers
> > > dnl # that do not have 24x7 DNS do need this.
> > > dnl #
> > > FEATURE(`accept_unresolvable_domains')dnl
> > > dnl #
> > > dnl FEATURE(`relay_based_on_MX')dnl
> > > dnl #
> > > dnl # Also accept email sent to "localhost.localdomain" as local email.
> > > dnl #
> > > LOCAL_DOMAIN(`localhost.localdomain')dnl
> > > dnl #
> > > dnl # The following example makes mail from this host and any additional
> > > dnl # specified domains appear to be sent from mydomain.com
> > > dnl #
> > > dnl MASQUERADE_AS(`mydomain.com')dnl
> > > dnl #
> > > dnl # masquerade not just the headers, but the envelope as well
> > > dnl #
> > > dnl FEATURE(masquerade_envelope)dnl
> > > dnl #
> > > dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com
> > > as well
> > > dnl #
> > > dnl FEATURE(masquerade_entire_domain)dnl
> > > dnl #
> > > dnl MASQUERADE_DOMAIN(localhost)dnl
> > > dnl MASQUERADE_DOMAIN(localhost.localdomain)dnl
> > > dnl MASQUERADE_DOMAIN(mydomainalias.com)dnl
> > > dnl MASQUERADE_DOMAIN(mydomain.lan)dnl
> > > MAILER(smtp)dnl
> > > MAILER(procmail)dnl
> > > Cwlocalhost.localdomain
> > > CwREDHAT1.canismajor.org
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > TriLUG mailing list
> > > http://www.trilug.org/mailman/listinfo/trilug
> > > TriLUG Organizational FAQ:
> > > http://www.trilug.org/~lovelace/faq/TriLUG-faq.html
> >
> > _______________________________________________
> > TriLUG mailing list
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> > TriLUG Organizational FAQ:
> > http://www.trilug.org/~lovelace/faq/TriLUG-faq.html
>
>
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