Ok, I did that. I edited the sendmail.mc, commenting the correct line and it
works now. My question now, will this make my machine vulnerable to be an
open relays for spammer? How do I prevent that?
Any help or pointer to documentations will be greatly appreciated.
Thanks.
Reuben D. Budiardja.
On Friday 01 February 2002 11:11 am, you wrote:
> At 2/1/2002 09:37 AM -0500, you wrote:
> >I would venture to guess your having the same problem i had. In RHL 7.2
> >Redhat made it so sendmail will not get mail from anyone but itself.
> >This was done as i understand for some security reason, not sure.
>
> This was done to reduce the number of open relays out on the Internet, to
> reduce spam. It is a very valid security concern.
>
> >You need to edit the file: /etc/sendmail.cf
>
> No! You should *not* edit the /etc/sendmail.cf unless you damn well know
> what you're doing. (And generally even for those people it's not
> necessary.)
>
> Instead you should edit /etc/mail/sendmail.mc. At the very end there is a
> short comment with an explanation of what to change and how to change it.
> The instructions have been posted to this list many times, and I don't have
> my server handy to be sure I give you the exact answer, so I'll not provide
> many details here.
>
> Comment out the right line by adding "dnl " at the beginning of the line.
> Save the file. Make a backup copy of /etc/sendmail.cf. Create a new
> /etc/sendmail.cf using the instructions provided inside sendmail.mc at the
> very top ("m4 /etc/mail/sendmail.mc > /etc/sendmail.cf"). Restart sendmail.
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