sendmail configuration problem

[killswitch808]

I've set up a sendmail server using the mc file below. The current configuration is supposed to speed up our bulk mailing system however some email accounts receives multiple copies of the same message. Here's the mc files contents:

include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`setup for Red Hat Linux')dnl
OSTYPE(`linux')dnl
nl define(`confLOG_LEVEL', `9')dnl
define(`confDEF_USER_ID',``8:12'')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
define(`STATUS_FILE', `/var/log/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 define(`confAUTH_OPTIONS', `A p')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(`confDONT_BLAME_SENDMAIL',`groupreadablekey file')dnl
dnl define(`QUEUE_DIR', `/var/spool/mqueue')dnl
QUEUE_GROUP(`local', `P=/var/spool/mqueue/local, F=f, R=2, I=30s')dnl
QUEUE_GROUP(`somedomainA', `P=/var/spool/mqueue/somedomainA, F=f, r=90, R=10, I=4m')dnl
QUEUE_GROUP(`somedomainB', `P=/var/spool/mqueue/somedomainB, F=f, r=90, R=14, I=5m')dnl
QUEUE_GROUP(`somedomainC', `P=/var/spool/mqueue/somedomainC, F=f, r=90, R=14, I=2m')dnl
QUEUE_GROUP(`remote', `P=/var/spool/mqueue/remote, F=f, r=99, R=10, I=8m')dnl
define(`ESMTP_MAILER_QGRP', `remote')dnl
define(`confSPLIT_ACROSS_QUEUEGROUPS', `True')dnl
define(`confDELIVERY_MODE', `q')dnl
define(`confMAX_QUEUE_CHILDREN', `50')dnl
define(`confMIN_QUEUE_AGE', `27m')dnl
dnl define(`confTO_QUEUEWARN', `1h')dnl
dnl define(`confTO_QUEUERETURN', `2h')dnl
dnl define(`confQUEUE_LA', `24')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 define(`confMAX_DAEMON_CHILDREN', 20)dnl
dnl define(`confCONNECTION_RATE_THROTTLE', 3)dnl
FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl
FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl
FEATURE(`blacklist_recipients')dnl
EXPOSED_USER(`root')dnl
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
dnl DAEMON_OPTIONS(`Port=submission, Name=MSA, M=Ea')dnl
dnl DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl
dnl DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6, Family=inet6')dnl
dnl DAEMON_OPTIONS(`Name=MTA-v4, Family=inet, Name=MTA-v6, Family=inet6')
dnl FEATURE(`relay_based_on_MX')dnl
LOCAL_DOMAIN(`localdomain')dnl
MAILER(smtp)dnl
MAILER(procmail)dnl
LOCAL_RULESETS
Squeuegroup
R$* localhost.localdomain $# local
R$* $* somedomainA.com $# somedomainA
R$* $* somedomainB.com $# somedomainB
R$* $* somedomainC.com $# somedomainC
R$* $* $# remote
R$* $# mqueue

In my mqueue directory I've created folder for somedomainA, somedomainB, somedomainC, local and remote. I've highlighted the lines which i think could be the possible problem areas of the setup. Sendmail gurus can you guys help me on this one? Thanks in advance

[ccolumbu]

Just add this to your .procmailrc file:
:0 Wh: msgid.lock
| formail -D 8192 msgid.cache