Sendmail/Postfix to act as the main exchanger but forwardallemailto Exchange! Any proven results?

Wed May 5 16:49:04 UTC 2004

Hello,

Again Sendmail not forwarding to Exchange...

Should "domaintable" have anything in it?

Here are the config files, can anyone spot something that may be hosing
it?
______________________________________________________________________
/etc/mail/access

localhost.localdomain           RELAY
localhost                       RELAY
127.0.0.1                       RELAY
get the valid user list from exchange via LDAP: (ldapsearch -x -b "" -h
<exchange.mytestdomain.com> rdn=*)
mytestdomain.com

mytestdomain.com                    RELAY
______________________________________________________________________

/etc/mail/mailertable

mytestdomain.com    esmtp:[exchange.mytestdomain.com]

______________________________________________________________________

/etc/mail/relay-domains

mytestdomain.com 
mytestdomain2.com

______________________________________________________________________

/etc/mail/virtusertable (NOTE THE SECOND IN LIST DOMAIN, IS IT SUPPOSE
TO HAVE %1)?

@ mytestdomain2.com        %1 at mytestdomain.com

______________________________________________________________________

/etc/mail/trusted-users
root
daemon
uucp
mytestuser1
mytestuser2
______________________________________________________________________

/etc/mail/sendmail.mc

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 #
dnl define(`SMART_HOST',`smtp.your.provider')
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 PLA
IN')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,Addr=192.168.1.5, 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(`mytestdomain.com')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(`mytestdomain.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

Sebastijan Petrovic
Systems Engineer
Danka Professional Services
http://www.digitaldanka.com

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Sebastijan Petrovic
Sent: Wednesday, May 05, 2004 11:23 AM
To: General Red Hat Linux discussion list
Subject: RE: Sendmail/Postfix to act as the main exchanger but
forwardallemailto Exchange! Any proven results?

I have a few issues:

1.  Sendmail accepts the mail but does not forward it to the Exchange
2003
2.  If I apply FEATURE(`dnsbl',`sbl.spamhaus.org',`Rejected
(http://spamhaus.org/)')dnl
Almost all mail is rejected, even from non spammers.

I'm not sure why Sendmail is not forwarding.
Is there a better solution/less inquisitive RBL than sbl.spamhaus.org?
Sebastijan Petrovic

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Chris W. Parker
Sent: Tuesday, May 04, 2004 2:16 PM
To: General Red Hat Linux discussion list
Subject: RE: Sendmail/Postfix to act as the main exchanger but forward
allemailto Exchange! Any proven results?

Sebastijan Petrovic <mailto:SebastijanP at digitaldanka.com>
    on Tuesday, May 04, 2004 11:03 AM said:

> Has anyone successfully setup Sendmail/Postfix to act as the main
> exchanger but forward all email to Exchange? I know there are
> numerous articles that provide bits, but is anyone using it and if so
> can they share config files?  

here is my setup:

internet > linux (sendmail, spamassassin) > exchange2k > users >
exchange2k > internet

what this means is the following:

1. all incoming mail first goes through our spam filter
2. it then is forwarded to our exchange server
3. which then forwards all the mail to the users inboxes
4. all outgoing mail comes from the exchange2k server itself. it does
not pass through the filter on the way out.

are you stuck on a certain spot in the configuration in particular?

chris.

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