MailScanner & DoS

[Devon Harding]

Yea, but I want this to be for every one, not just cable users

On 3/3/06, Chris Stone <cstone at axint.net> wrote:
>
> Try using something like the NJABL_DYNBLOCK rbl to block such cable/dsl
> users
> from connecting......
>
> On Friday 03 March 2006 07:44 pm, Devon Harding wrote:
> > For some reason, I can't seem to stop hackers from performaing DoS
> against
> > my IPCop fw & MailScanner server.  I get alot of these in my
> > /var/log/maillog and the boxes get locked up:
> >
> > Mar  1 20:12:48 mars sendmail[27017]: k220vlXF027017:
> > 69-165-202-64.miamfl.adelphia.net [69.165.202.64] did not issue
> > MAIL/EXPN/VRFY/ETRN during connection to MTA
> > Mar  1 20:12:48 mars sendmail[27019]: k220vmrk027019:
> > 69-165-202-64.miamfl.adelphia.net [69.165.202.64] did not issue
> > MAIL/EXPN/VRFY/ETRN during connection to MTA
> > Mar  1 20:12:48 mars sendmail[27018]: k220vlM8027018:
> > 69-165-202-64.miamfl.adelphia.net [69.165.202.64] did not issue
> > MAIL/EXPN/VRFY/ETRN during connection to MTA
> > Mar  1 20:12:49 mars sendmail[27020]: k220vm8s027020:
> > 69-165-202-64.miamfl.adelphia.net [69.165.202.64] did not issue
> > MAIL/EXPN/VRFY/ETRN during connection to MTA
> > Mar  1 20:12:49 mars sendmail[27023]: k220vngJ027023:
> > 69-165-202-64.miamfl.adelphia.net [69.165.202.64] did not issue
> > MAIL/EXPN/VRFY/ETRN during connection to MTA
> > Mar  1 20:12:49 mars sendmail[27021]: k220vmjG027021:
> > 69-165-202-64.miamfl.adelphia.net [69.165.202.64] did not issue
> > MAIL/EXPN/VRFY/ETRN during connection to MTA
> >
> > What can I do?
> --
> MailScanner mailing list
> mailscanner at lists.mailscanner.info
> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>
> Before posting, read http://wiki.mailscanner.info/posting
>
> Support MailScanner development - buy the book off the website!
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mailscanner.info/pipermail/mailscanner/attachments/20060304/ebe83f54/attachment.html