Re: Re: [SPAM] Whitelist rDNS for a single server

SPAMCONTROL Maybe?

http://www.fehcom.de/qmail/spamcontrol/README_spamcontrol.html

Invoking the environment variable MFDNSCHECK in the qmail-smtpd  
startup script enables globally the DNS check for the envelope's Sender.

Example:

     #!/bin/sh
     export MFDNSCHECK=""
     .....

Additionally, the environment variable may be defined individually  
within a cdb of tcpserver/sslserver. Typically, this is done for  
"non-trusted" hosts within a tcpservers cdb:

     127.0.01:allow,RELAYCLIENT=""
     :allow,MFDNSCHECK=""

If environment variable MFDNSCHECK is not set, qmail-smtpd does not  
perform this DNS MX check.



Rick

Quoting Rob Wright <[email protected]>:

> Thanks for the reply. It's definitely not spamdyke, as we do not have this
> installed. When Inter7 did the setup for is SpamAssassin was installed.
>
> Here's what I've got in my log file, it's qmail-smtpd doing the rejection.
>
> @400000004e5539281689fb3c tcpserver: ok 10664
> mail.poncacity.net:70.254.229.3:25 :70.254.229.27::53562
> @400000004e5539281aedc6a4 CHKUSER accepted rcpt: from
> <[email protected]:unknown:> remote
> <callisto.poncacity.net:unknown:70.254
> .229.27> rcpt <[email protected]> : found existing recipient
> @400000004e5539281db9851c qmail-smtpd: senders must have valid reverse DNS
> @400000004e5539281dbe47dc tcpserver: end 10664 status 256
>
> Part of the problem here is that I can't figure out what they've  
> hacked to get
> qmail-smtpd to do the rejection. In my /var/qmail/control directory there is
> an 'rdns' file with a value of "1"; rdns checking is either on or off.
>
> Any further ideas?  I suppose this may be a lesson for the boss to "install
> your own mail server" but that bridge is already crossed. If there's no clear
> answer I'll just have to call Inter7 for support and let them deal with it.
>
> Rob
>
> On Wednesday 24 August 2011 11:49:44 Eric Shubert wrote:
>> That would take care of things if the rejection is due to an RBL, but
>> the rejection is stated as being due to lack of rDNS, which is
>> different. The only thing I know of that rejects due to missing rDNS
>> (using qmail) is spamdyke (a very good anti-spam tool btw).
>>
>> What specifically is causing the reject? You might post a sample from
>> your smtp log if you can't tell. If it's spamdyke, then the spamdyke
>> config has several ways of whitelisting.
>>
>> > http://cr.yp.to/ucspi-tcp/rblsmtpd.html
>> >
>> > Edit your tcp.smtp file and put the address in and set RBLSMTPD="" and it
>> > will bypass the RBL check for that IP address. Afterwards, rebuild your
>> > tcp.smtp.cdb file (depending on how your built your toaster it'll be as
>> > easy as "qmailctl cdb", or some other manual command)
>> >
>> > Hope that helps.
>> >
>> > On 11-08-24 9:14 AM, "Rob Wright"<[email protected]>  wrote:
>> >> Greetings. I hope this list is still intact and that I'm on-topic. I've
>> >> searched for a solution and haven't been able to come up with anything.
>> >>
>> >> I've got a problem sprung up recently and can't quite figure out how to
>> >> get
>> >> around it. While I'm waiting for a bureaucracy to unsnaggle some DNS
>> >> information on their side, is there anyway for us to whitelist a single
>> >> mail
>> >> server that's being rejected for not having rDNS? The mail server is
>> >> known to
>> >> us and I feel comfortable with taking this action. Hopefully this won't
>> >> be a
>> >> permanent solution but just a dirty hack while I wait for others to do
>> >> their
>> >> jobs.
>> >>
>> >> We've got a vanilla Inter7 installed vpopmail/qmail system and I have
>> >> not been
>> >> able to figure out of this is do-able or not. If it's possible how can I
>> >> go
>> >> about doing so?
>> >>
>> >> Thanks for any help or pointers.
>> >>
>> >> Rob Wright
>> >> [email protected]
>>
>>
>
> 




!DSPAM:4e55424432714216820005!