Hi,
My mail log is giving me these type of messages below. Looks like some
guy or group of peole is using my smtp server as a relay machine.
Fortunately my smtp rules are forbidding it, i think. But how do i stop
all these messages in the mail log? The from is not frommy domain and
looks like they can access my smtp and send email... I am using suse 7.3
and it is outdated and still working on my new 9.2 box, but i am curious
what happened and how to resolve the problem.
thanks
henry
], reject=550 5.7.1 ... Relaying denied
Mar 31 09:12:22 main sendmail[20762]: j2VFCEA20762:
from=, size=0, class=0, nrcpts=0, proto=SMTP,
daemon=MTA, relay=219-81-229-104.static.tfn.net.tw [219.81.229.104]
Mar 31 09:12:22 main sendmail[20765]: j2VFCIA20765:
from=, size=0, class=0, nrcpts=0, proto=ESMTP,
daemon=MTA, relay=61-31-138-39.dynamic.tfn.net.tw [61.31.138.39]
Mar 31 09:12:25 main sendmail[20767]: j2VFCNA20767: ruleset=check_rcpt,
arg1=, relay=61-31-138-39.dynamic.tfn.net.tw
[61.31.138.39], reject=550 5.7.1 ... Relaying
denied
Mar 31 09:12:25 main sendmail[20766]: j2VFCIA20766: ruleset=check_rcpt,
arg1=, relay=219-81-238-110.static.tfn.net.tw
[219.81.238.110], reject=550 5.7.1 ... Relaying denied
Mar 31 09:12:25 main sendmail[20766]: j2VFCIA20766:
from=, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA,
relay=219-81-238-110.static.tfn.net.tw [219.81.238.110]
Mar 31 09:12:28 main sendmail[20767]: j2VFCNA20767:
from=, size=0, class=0, nrcpts=0, proto=ESMTP,
daemon=MTA, relay=61-31-138-39.dynamic.tfn.net.tw [61.31.138.39]
Mar 31 09:12:28 main sendmail[19729]: j2UNB0127150:
to=, delay=16:01:28, xdelay=00:00:31,
mailer=esmtp, pri=2677160, relay=mx.pchome.com.tw. [211.20.188.150],
dsn=4.0.0, stat=Deferred: 440 Error: Wrong recipients
Mar 31 09:12:31 main sendmail[20769]: j2VFCTA20769: ruleset=check_rcpt,
arg1=, relay=61-31-138-39.dynamic.tfn.net.tw
[61.31.138.39], reject=550 5.7.1 ... Relaying
denied
Mar 31 09:12:32 main sendmail[20769]: j2VFCTA20769:
from=, size=0, class=0, nrcpts=0, proto=ESMTP,
daemon=MTA, relay=61-31-138-39.dynamic.tfn.net.tw [61.31.138.39]
Mar 31 09:12:35 main sendmail[20770]: j2VFCXA20770: ruleset=check_rcpt,
arg1=, relay=61-31-138-39.dynamic.tfn.net.tw
[61.31.138.39], reject=550 5.7.1 ... Relaying
denied
Mar 31 09:12:36 main sendmail[20770]: j2VFCXA20770:
from=, size=0, class=0, nrcpts=0, proto=ESMTP,
daemon=MTA, relay=61-31-138-39.dynamic.tfn.net.tw [61.31.138.39]
Mar 31 09:12:39 main sendmail[20772]: j2VFCbA20772: ruleset=check_rcpt,
arg1=, relay=61-31-138-39.dynamic.tfn.net.tw
[61.31.138.39], reject=550 5.7.1 ... Relaying
denied
Mar 31 09:12:39 main sendmail[19729]: j2UNB0127150:
to=, delay=16:01:39, xdelay=00:00:42,
mailer=esmtp, pri=2677160, relay=mx.pchome.com.tw. [211.20.188.150],
dsn=4.0.0, stat=Deferred: 440 Error: Wrong recipients
Mar 31 09:12:40 main sendmail[20772]: j2VFCbA20772:
from=, size=0, class=0, nrcpts=0, proto=ESMTP,
daemon=MTA, relay=61-31-138-39.dynamic.tfn.net.tw [61.31.138.39]
Mar 31 09:12:43 main sendmail[20774]: j2VFCfA20774: ruleset=check_rcpt,
arg1=, relay=61-31-138-39.dynamic.tfn.net.tw
[61.31.138.39], reject=550 5.7.1 ... Relaying
denied
Mar 31 09:12:44 main sendmail[20774]: j2VFCfA20774:
from=, size=0, class=0, nrcpts=0, proto=ESMTP,
daemon=MTA, relay=61-31-138-39.dynamic.tfn.net.tw [61.31.138.39]
Mar 31 09:12:46 main sendmail[20777]: j2VFCjA20777: ruleset=check_rcpt,
arg1=, relay=61-31-138-39.dynamic.tfn.net.tw
[61.31.138.39], reject=550 5.7.1 ... Relaying
denied
Mar 31 09:12:46 main sendmail[20776]: j2VFCjA20776: ruleset=check_rcpt,
arg1=, relay=219-81-231-102.static.tfn.net.tw
[219.81.231.102], reject=550 5.7.1 ... Relaying denied
Mar 31 09:12:47 main sendmail[20776]: j2VFCjA20776: ruleset=check_rcpt,
arg1=, relay=219-81-231-102.static.tfn.net.tw
[219.81.231.102], reject=550 5.7.1 ... Relaying
denied
Mar 31 09:12:47 main sendmail[20776]: j2VFCjA20776: ruleset=check_rcpt,
arg1=,
relay=219-81-231-102.static.tfn.net.tw [219.81.231.102], reject=550
5.7.1 ... Relaying denied
Mar 31 09:12:47 main sendmail[20777]: j2VFCjA20777:
from=, size=0, class=0, nrcpts=0, proto=ESMTP,
daemon=MTA, relay=61-31-138-39.dynamic.tfn.net.tw [61.31.138.39]
Mar 31 09:12:48 main sendmail[20776]: j2VFCjA20776: ruleset=check_rcpt,
arg1=, relay=219-81-231-102.static.tfn.net.tw
[219.81.231.102], reject=550 5.7.1 ... Relaying
denied
Mar 31 09:12:48 main sendmail[20776]: j2VFCjA20776: ruleset=check_rcpt,
arg1=, relay=219-81-231-102.static.tfn.net.tw
[219.81.231.102], reject=550 5.7.1 ...
Relaying denied
Mar 31 09:12:49 main sendmail[20776]: j2VFCjA20776: ruleset=check_rcpt,
arg1=<19720319@yahoo.com.tw>, relay=219-81-231-102.static.tfn.net.tw
[219.81.231.102], reject=550 5.7.1 <19720319@yahoo.com.tw>... Relaying
denied
Mar 31 09:12:49 main sendmail[20778]: j2VFCmA20778: ruleset=check_rcpt,
arg1=, relay=61-31-138-39.dynamic.tfn.net.tw
[61.31.138.39], reject=550 5.7.1 ... Relaying
denied
