Date: Sun, 15 Dec 96 08:48:24 -0800 From: Cy Schubert - ITSD Open Systems Group <cschuber@uumail.gov.bc.ca> To: Ahmad Lokman <alhh@alurtenaga.com.my> Cc: "'security@freebsd.org'" <security@freebsd.org> Subject: Re: How to limit the size of the email from outside Message-ID: <199612151648.IAA14854@passer.osg.gov.bc.ca> In-Reply-To: Your message of "Mon, 16 Dec 96 00:02:06." <01BBEAE4.60915180@sting.alurtenaga.com.my>
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> Here I would like to know if anyone out there know how to prevent someone
> sending a large file of email to an email server. This will prevent the
> guy from jamming the server. Please give me any suggestion on this matter..
Try Maxsize in your Mlocal and Mprog statements.
This is what I use on my DEC Alpha desktop at work.
Mlocal, P=/bin/mail, F=lsDFMrmn, S=10, R=20/40,
Maxsize=1000000,
A=mail -d $u
Mprog, P=/usr/local/sendmail/smrsh, F=lsDFMeu, S=10, R=20/40, D=$z:/,
Maxsize=1000000,
A=sh -c $u
This limits incoming mail processed by by smrsh and /bin/mail to 1 million
bytes.
You can do the same with the Mstmp, Mesmtp, and Mrelay statements to limit
the size of outgoing mail as well.
Regards, Phone: (250)387-8437
Cy Schubert OV/VM: BCSC02(CSCHUBER)
Open Systems Support BITNET: CSCHUBER@BCSC02.BITNET
ITSD Internet: cschuber@uumail.gov.bc.ca
cschuber@bcsc02.gov.bc.ca
"Quit spooling around, JES do it."
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