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Re: [FW-1] Spam blacklist...How to stop open relays at the firewa ll(FW-1 ) HELP!!!!!!!!!
- To: [email protected]
- Subject: Re: [FW-1] Spam blacklist...How to stop open relays at the firewa ll(FW-1 ) HELP!!!!!!!!!
- From: Hal Dorsman <[email protected]>
- Date: Wed, 24 Oct 2001 15:26:24 -0600
- Reply-to: Mailing list for discussion of Firewall-1 <[email protected]>
- Sender: Mailing list for discussion of Firewall-1 <[email protected]>
- Thread-index: AcFc0QZaXnpjkaQORJ6M47nX/UiCBAAAVezA
- Thread-topic: Re: [FW-1] Spam blacklist...How to stop open relays at the firewa ll(FW-1 ) HELP!!!!!!!!!
Yes, sendmail supports access lists. This is a mailer issue, not
a firewalling issue.
Hal
> -----Original Message-----
> From: Tim Anderson [mailto:[email protected]]
> Sent: Wednesday, October 24, 2001 8:24 AM
> To: [email protected]
> Subject: Re: [FW-1] Spam blacklist...How to stop open relays at the
> firewa ll(FW-1 ) HELP!!!!!!!!!
>
>
> What type of mail relay are you using? If it is Exchange you
> can refuse
> relaying very easily except for appropriate inbound mail. I am sure
> Sendmail has similar features.
>
> Tim Anderson
>
> -----Original Message-----
> From: Reed Mohn, Anders [mailto:[email protected]]
> Sent: Wednesday, October 24, 2001 3:48 AM
> To: [email protected]
> Subject: Re: [FW-1] Spam blacklist...How to stop open relays at the
> firewa ll(FW-1 ) HELP!!!!!!!!!
>
>
> Sorry for pointing out the obvious here, but:
>
> The best way is, of course, to fix the mailserver.
>
> One day, someone will find a loophole through the firewall,
> and you will be up that creek again.
>
> Cheers,
> Anders :)
>
>
>
> -----Original Message-----
> From: Timothy K. Cornelius [mailto:[email protected]]
> Sent: 23. oktober 2001 23:27
> To: [email protected]
> Subject: Re: [FW-1] Spam blacklist...How to stop open relays at the
> firewall(FW-1 ) HELP!!!!!!!!!
>
>
>
>
> At this time our internet mailserver(behind the FW-1) has
> been designated as
> an open relay mailserver and has been blacklisted by several
> spam blocker
> websites( www.orbz.org <http://www.orbz.org> is one of them)
> after reading
> up on how to stop this at the firewall I added two rules on
> the firewall
> with services w/resources. the
> resource(SMTP->our-mail-only-in) is SMTP and
> the match is coming in the sender is * and the recipient is
> *loi.org. The
> other is going out, the resource(SMTP->our-mail-only-out) is
> SMTP and the
> match is sender is *loi.org and the recipient is * I have
> also created a
> rule below these two that denies and mail service plus 2 services with
> resources (SMTP->openrelay-in and SMTP->openrelay-out) these
> are the same as
> the first two. Is this not the correct way to handle stopping
> an open relay
> mailserver or is there a better way?
>
>
> PLEASE HELP ME ASAP!!!!!!!!!!!!!!! our mail services are just about
> non-existent, except my Firewall email groups.
>
> 1 Source: any Dest.: mailserver Service: SMTP->our-mail-only-in
> Action: accept
> 2 Source:mailserver Dest: any Service:SMTP->our-mail-only-out
> Action: accept
>
>
> Thanks in advance,
>
> Tim
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.286 / Virus Database: 152 - Release Date: 10/9/2001
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.286 / Virus Database: 152 - Release Date: 10/9/2001
>
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