Mailinglist Archive: opensuse-security (375 mails)

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Re: Problem with SPAM
Hi Ruben,

is it possible to telnet to your SMTP Service on your Server? It could
be possible, because you can specify what Name nobody.

Make sure you have to identify if you connect to SMTP with telnet, or
allow that only your Private, or reserved IP Adresses can send a Email.

Best Regards
Andreas Fertl



------------------------------------------------------------------------

Have a look at this:

Sep 12 23:02:58 linux sendmail[29953]: g8CN2vbM029953: from=nobody,
size=829,
class=0, nrcpts=1,
msgid=<200209122302.g8CN2vbM029953@xxxxxxxxxxxxxxxxxxxxx>,
relay=nobody@localhost
Sep 12 23:02:58 linux sendmail[29954]: g8CN2wBF029954:
from=<nobody@xxxxxxxxxxxxxxxxxxxxx>, size=995, class=0, nrcpts=1,
msgid=<200209122302.g8CN2vbM029953@xxxxxxxxxxxxxxxxxxxxx>, proto=ESMTP,
daemon=MTA, relay=IDENT:nobody@xxxxxxxxxxxxxxxxxxxxx [127.0.0.1]
Sep 12 23:02:58 linux sendmail[29953]: g8CN2vbM029953:
to=CHIPAELDEVERDAD@xxxxxxxxxxx, ctladdr=nobody (99/99), delay=00:00:01,
xdelay=00:00:00, mailer=relay, pri=30274, relay=localhost [127.0.0.1],
dsn=2.0.0, stat=Sent (g8CN2wBF029954 Message accepted for delivery)
Sep 12 23:03:02 linux sendmail[29957]: g8CN2wBF029954:
to=<CHIPAELDEVERDAD@xxxxxxxxxxx>, ctladdr=<nobody@xxxxxxxxxxxxxxxxxxxxx>
(99/99), delay=00:00:04, xdelay=00:00:04, mailer=esmtp, pri=30440,
relay=mx16.hotmail.com. [65.54.254.140], dsn=2.0.0, stat=Sent (
<200209122302.g8CN2vbM029953@xxxxxxxxxxxxxxxxxxxxx> Queued mail for
delivery)

We don't know how, but are doing SPAM with our server using nobody
account .
we are using SASL + Sendmail 8.12.5
All is running 100% except that problem...
SASL autetification is running ok.
Nobody can do relay without autentification.

Please...could you help us?

A lot of thank's.

- --
You can find my public key here:
http://pgp.rediris.es:11371/pks/lookup?op=get&search=0x03B7CCDF
Linux Registered User 68452 (Nov/97)
Ruben Navarro Huedo
http://www.palotes.com
eb5esx@xxxxxxxxxxxxxxx&#0;



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