[nos-bbs] How to avoid SMTP spam mail in mqueue

[Jose Ng Lee]

I noticed today my Raspberry Pi Jnos was respawing in every few minutes.   So, I checked and found out there was some spam e-mails in mqueue not been able to deliver and causing the system to crash and respawn.  Deleted those e-mails and checking the logs and put in blacklist the offender IPs.

I play with 3 Jnos systems:

Main systems PC with Linux Ubuntu 12.04 LTS: onx.hp2at.ampr.org
No spam mail in mqueue.

Raspberry Pi with Raspbian: hp2ng.ampr.org
Few spam mail in mqueue.

PC with Centos 5.9: hp2sa.ampr.org
THOUSANDS of spam mail in mqueue.  Don't know how this got through or why it was received in JNOS.  The autoexec.nos is the same as my other system.

This is on the message heading on one mail:

Received: from pc-200402271018 by hp2sa.ampr.org (ONXSA BBS) with SMTP
        id AA24803 ; Thu, 13 Mar 2014 03:17:52 EST
From: =?BIG5?B?pWqo5a21vNY=?= <springboard at yahoo.com>
To: "awze" <awze at awze.com>
Subject:
 =?BIG5?B?RGlzbmV5qOC1o7nPrtGhQqlfpf2lzaeupHCpaiC1paqpxXao7LTBuc+u0aFCpfq6?=
 =?BIG5?B?0KRqpViyTaFJ?=
Date: Wed, 28 Apr 2004 22:58:06 +0800
MIME-Version: 1.0
Content-Type: text/html;
        charset="Big5"
Content-Transfer-Encoding: quoted-printable
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2800.1106
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106
Message-Id: <24804 at hp2sa.ampr.org>

Took this JNOS offline until the problem solve.

Please can anyone know a way to deny receiving spam mail in jnos.

Thanks,
José / HP2AT
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