Hi, I have a server hosting severall domains. I'm using sendmail version 8.13.8, config V10/Berkeley.

I am relaying e-mails that aren't from my domains and to my domains... example cutted from sendmail log:


sendmail[20144]: nASDemoR020144: from=<toastiestb65@rosebudus.com>, size=3221, class=0, nrcpts=1, msgid=<036357486.36118267127985@rosebudus.com>, proto=ESMTP, daemon=MTA, relay=dsl-189-173-130-148-dyn.prod-infinitum.com.mx [189.173.130.148] (may be forged)
sendmail[20249]: nASDpnfm020249: from=<unmanliestn5@reply.myfamilyinc.com>, size=4138, class=0, nrcpts=1, msgid=<000d01ca7031$eca1b710$6400a8c0@unmanliestn5>, proto=ESMTP, daemon=MTA, relay=localhost [222.254.153.220] (may be forged)


it's not from a user of any of my domains and the e-mail it's not for a user of any of my domains.

my m4 configuration is:

divert(-1)dnl
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`setup for linux')dnl
OSTYPE(`linux')dnl
define(`confDEF_USER_ID', ``8:12'')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',20000000)
define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl
define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl
define(`confAUTH_OPTIONS', `A')dnl
TRUST_AUTH_MECH(`LOGIN PLAIN')dnl
define(`confAUTH_MECHANISMS', `LOGIN PLAIN')dnl
define(`confQUEUE_LA', `50')dnl
define(`confREFUSE_LA', `60')dnl
define(`confTO_IDENT', `0')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
define(`confMAX_DAEMON_CHILDREN',15)
define(`confCONNECTION_RATE_THROTTLE',3)
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=111.222.333.444, Name=MTA')dnl
LOCAL_DOMAIN(`localhost.localdomain')dnl
define(`confTO_INITIAL', `30s')dnl
define(`confTO_CONNECT', `30s')dnl
define(`confTO_ACONNECT', `1m')dnl
define(`confTO_ICONNECT', `30s')dnl
define(`confTO_HELO', `30s')dnl
define(`confTO_MAIL', `30s')dnl
define(`confTO_RCPT', `30s')dnl
define(`confTO_DATAINIT', `1m')dnl
define(`confTO_DATABLOCK', `1m')dnl
define(`confTO_DATAFINAL', `1m')dnl
define(`confTO_RSET', `30s')dnl
define(`confTO_QUIT', `30s')dnl
define(`confTO_MISC', `30s')dnl
define(`confTO_COMMAND', `30s')dnl
define(`confTO_CONTROL', `30s')dnl
define(`confTO_LHLO', `30s')dnl
MAILER(smtp)dnl
MAILER(procmail)dnl


Can anyone help on this ?
NOTE I HAVE CHANGED MY IP TO 111.222.333.444 on the m4 config to protect innocents

Hi,

Are you sure that the emails in your log snippet are actually get delivered? Because you didn't post the "to=..." part, so we can see what happened to them.
You can test your mail server, to see if it's an open relay, here.

Regards

Thanks for the tips....

All the tests were ok!

No relay allowed.

Thanks, PR