Re: Greylist-users Digest, Vol 39, Issue 1

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> Today's Topics:
>
>    1. White-listing recipients? (Andreas F. Borchert)
>    2. Re: White-listing recipients? (Gabriel Millerd)
>    3. Re: White-listing recipients? (Andreas F. Borchert)
>    4. Re: White-listing recipients? (Gabriel Millerd)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 4 Aug 2006 23:02:22 +0000 (UTC)
> From:
> 	gmane.mail.spam.greylist.user@expires-on-2006-08-13.usenet.andreas-borchert.de	
> 	(Andreas F. Borchert)
> Subject: [Greylist-users] White-listing recipients?
> To: [email protected]
> Message-ID:
> 	<slrned7kfu.bmh.gmane.mail.spam.greylist.user@usenet.andreas-borchert.de>
> 	
>
> Hello,
>
> our university mail system uses greylisting. Some people appreciate
> the spam-filtering effect but I personally would like to receive all
> emails without delays and without the danger of losing any incoming
> message (due to different sending IPs, for example).
>
> I am not familiar with any of the greylisting implementations. Is there
> any support in any of the implementations that allow individual users
> (i.e. recipients) to opt-out of the system?
>
> I would appreciate any pointers and/or ideas. (Please note that I am
> not the admin on that system but someone who would like to forward such
> pointers to the admins. Our university mail system is based on
> sendmail 8.13.7.)
>
> Thanks, Andreas.
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 4 Aug 2006 20:54:06 -0500
> From: "Gabriel Millerd" <[email protected]>
> Subject: Re: [Greylist-users] White-listing recipients?
> To: "Greylisting Users and Developers Discussion"
> 	<[email protected]>
> Message-ID:
> 	<[email protected]>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
>   
>> I would appreciate any pointers and/or ideas. (Please note that I am
>> not the admin on that system but someone who would like to forward such
>> pointers to the admins. Our university mail system is based on
>> sendmail 8.13.7.)
>>
>>     
>    Its a hard sell to most large system administrators to make such exceptions.
>
>    I would say using a whitelist like dnswl.junkemailfilter.com or
> exemptions.ahbl.org before the greylist helps with your concerns. It
> will keep track of for example all the hotmail, ebay, and what not
> dynamic services. But your administrator might say ebay correspondence
> should go to a gmail.com account or something non-unversity related.
> And he would have a good basis for that.
>    Though if you have a series academic mailing lists that use verp or
> something. That can be aweful, likely you could work out with your
> admin to whitelist various addresses from it if there was a need for
> it.
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 5 Aug 2006 06:28:50 +0000 (UTC)
> From:
> 	gmane.mail.spam.greylist.user@expires-on-2006-08-13.usenet.andreas-borchert.de	
> 	(Andreas F. Borchert)
> Subject: Re: [Greylist-users] White-listing recipients?
> To: [email protected]
> Message-ID:
> 	<slrned8el2.bmh.gmane.mail.spam.greylist.user@usenet.andreas-borchert.de>
> 	
> Content-Type: text/plain; charset=iso-8859-1
>
> On 2006-08-05, Gabriel Millerd <[email protected]> wrote:
>   
>>> I would appreciate any pointers and/or ideas. (Please note that I am
>>> not the admin on that system but someone who would like to forward such
>>> pointers to the admins. Our university mail system is based on
>>> sendmail 8.13.7.)
>>>
>>>       
>>    Its a hard sell to most large system administrators to make such exceptions.
>>     
>
> I asked for a technical question and hoped for a technical response,
> i.e. if a white-listing for recipients has been implemented. You,
> however, just tell me that this would be a »hard sell«.
>
> I see this from a different viewpoint. I have to receive emails reliably
> and timely over a address which is handled by this mail system that
> applies greylisting.  And in my case, I do not know in advance where
> the emails come from as my students use quite a diverse set of mail
> services. So white-listing senders does not help in my case.  If I have
> a phone call and someone is sending me some documents to be seen while
> we are still talking, a delay of even 5 minutes is a show-stopper. And
> to lose emails and not even knowing what is lost is a disaster in my case.
>
> Andreas.
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 5 Aug 2006 08:35:45 -0500
> From: "Gabriel Millerd" <[email protected]>
> Subject: Re: [Greylist-users] White-listing recipients?
> To: "Greylisting Users and Developers Discussion"
> 	<[email protected]>
> Message-ID:
> 	<[email protected]>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
>   
>> I asked for a technical question and hoped for a technical response,
>> i.e. if a white-listing for recipients has been implemented. You,
>> however, just tell me that this would be a »hard sell«.
>>
>>     
>
>
>     What greylist method does he use? Just saying his Sendmail version
> is not helpful.
>
>   
Andreas, yes, it is possible to white-list a receiving address if you 
want to opt out.
The SQL line would just contain a receiving address, and the expiration 
time is set to something to the effect of "12-31-9999 23:59:59" 
(december 31, 9999 11:59:59pm)  with the block_expire set to a date/time 
before now.

Any mail sent to that receiving address is counted as already having 
passed it's ban expiration by relaydelay and delivered through.
Is that what you were asking?
Thanks
-pete lesko