Thanks for that help Gary,

My whitelist_rdns does not have any entries.  Can you tell me what we should 
put in that?  Is it a single line:

yahoo.com

 

and in whitelist_senders file:

a.  Do I list email addresses on individual lines?

b.  Can we use wildcards like *@bbc.co.uk?

 

Maybe the following should be a separate post, but we have disabled some of the 
main spamdyke checks:

 

reject-missing-sender-mx=false

reject-empty-rdns=false

reject-unresolvable-rdns=false

reject-identical-sender-recipient=false

 

because we were getting a lot of genuine emails rejected and it was really 
affecting our service to hosted domains.  Is there a clever way to monitor and 
try to identify the genuine emails which do not have MX or RDNS properly set 
up?  And when those come through, what steps do you seasoned gurus use to allow 
genuine emails through while keeping those rules intact?  Advice very 
gratefully received from this lovely mailing list where responses are 
comprehensive and quick – thank you all for that.

 

Kind Regards,  Christoph Kuhle

 

From: [email protected] 
[mailto:[email protected]] On Behalf Of [email protected]
Sent: 16 September 2012 23:39
To: spamdyke users
Subject: Re: [spamdyke-users] How best to whitelist rejected emails

 

Some RBLs block yahoo because spammers really love to use it. I feel that this 
is way too aggressive and any blacklist that blocks like this I avoid. However, 
I do have yahoo in my rdns whitelist anyway since I use that to avoid putting 
things on the graylist. This way I can use the graylist more effectively to see 
if my spamdyke rejection strategy is working well.

Gary

  _____  

On Sep 16, 2012 6:02 PM, emailitis.com <[email protected]> wrote: 

Thank you Sam for your speedy response.  How can I tell if I have the latest 
version?  Can you tell me what shell command to run?  And to update, is it 
simply “yum upgrade spamdyke”?

 

I do not want to whitelist the whole btinternet.com domain as there will be 
Spam.  I really like your idea to “use a configuration directory to whitelist 
any sender within btinternet.com when the rDNS of the server is within 
yahoo.com”.  Can you tell me how to do that please?

 

Kind regards, 

 

  <http://www.facebook.com/pages/emailitis/271193302894913> Description: 
emailitis

VoIP | Broadband | Domain hosting | Web design & SEO

 

emailitis.com <http://www.emailitis.com/>    |  01722 770004   |   Cross Keys 
House, Queen Street, Salisbury, SP1 1EY 

emailitis.com is a trading name of Expat Email Ltd, Registered in England (No. 
05140609)   VAT No. GB 843 7166 15

 

 <http://www.twitter.com/emailitis> Description: ZA102637858 
<http://www.facebook.com/pages/emailitis/271193302894913> Description: 
ZA102637861    

 

From: [email protected] 
[mailto:[email protected]] On Behalf Of Sam Clippinger
Sent: 16 September 2012 22:51
To: spamdyke users
Subject: Re: [spamdyke-users] How best to whitelist rejected emails

 

This is an RBL rejection, which means that the remote IP address has been 
blacklisted by a DNS RBL provider you're using.  (If you upgrade spamdyke to 
the latest version, the log message will include the name of the RBL that 
generated the match.)  I point this out because you may not want to whitelist 
this -- it may actually be spam.

 

If you don't want to just whitelist the entire btinternet.com domain from any 
source, you could use a configuration directory to whitelist any sender within 
btinternet.com when the rDNS of the server is within yahoo.com.  That would 
help cut down on the false negatives.  You could further restrict the whitelist 
to only trigger when the recipient is also within a specific domain(s) on your 
server.


-- Sam Clippinger

 

 

 

 

On Sep 16, 2012, at 4:00 PM, emailitis.com wrote:

 

We are getting BT emails rejected like:

 

Sep 12 20:56:28 plesk3 spamdyke[20050]: DENIED_RBL_MATCH from: 
[email protected] to: [email protected] origin_ip: 
77.238.189.199 origin_rdns: nm2-vm0.bullet.mail.ird.yahoo.com auth: (unknown) 
encryption: (none)

 

I could whitelist the sender (not recommended I know).  But is there a better 
way to ensure that all btinternet emails (now owned by yahoo) can be 
whitelisted?

 

Also, if we were to whitelist a sender, is the email address only shown in the 
whitelist_senders file?

 

Kind regards,  Christoph

 

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