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From Marc Perkel <>
Subject Re: RBL format to blacklist email addresses?
Date Tue, 04 Aug 2015 19:07:41 GMT
Yes - I'm going to convert all to lower case.

On 07/29/15 16:56, Reindl Harald wrote:
> Am 30.07.2015 um 01:53 schrieb Bill Cole:
>> Does this text look at all familiar?
>>>   Verbs and argument values (e.g., "TO:" or "to:" in the RCPT command
>>>   and extension name keywords) are not case sensitive, with the sole
>>>   exception in this specification of a mailbox local-part (SMTP
>>>   Extensions may explicitly specify case-sensitive elements). That is,
>>>   a command verb, an argument value other than a mailbox local-part,
>>>   and free form text MAY be encoded in upper case, lower case, or any
>>>   mixture of upper and lower case with no impact on its meaning.  The
>>>   local-part of a mailbox MUST BE treated as case sensitive.
>>>   Therefore, SMTP implementations MUST take care to preserve the case
>>>   of mailbox local-parts.
> and then comes the real world.........
> * no mailserver on this world treats the local part case-sensitive
> * you sell "" is a different person than
>   ""?
> * well, how do you handle half of your users just for fun
>   using caps in their mail client and the other half don't

Marc Perkel - Sales/Support
Junk Email Filter dot com

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