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From Rupert Gallagher <>
Subject Re: Direct download link detection
Date Fri, 28 Jul 2017 09:19:36 GMT
msg-id = "<" addr-spec ">";
addr-spec = local-part "@" domain;
domain = sub-domain *("." sub-domain);
sub-domain = domain-ref / domain-literal;
<<a domain-ref must be THE official name of a registry, network, or host>>
[RFC 822, pg. 30, section 6.2.3]
Re: typing errors due to my fingers, on iPhone 4s's tiny buttons
Sent from ProtonMail webmail.

> -------- Original Message --------
> Subject: Re: Direct download link detection
> Local Time: July 27, 2017 9:06 PM
> UTC Time: July 27, 2017 7:06 PM
> From:
> To:
> On 2017-07-27 13:08, Rupert Gallagher wrote:
>> The rfc prescribes (MUST) the use of your public domain in the domain
>> part of your mid.
> If you mean RFC 5322, this is not true. Section 3.6.4:
> The message identifier (msg-id) itself MUST be a globally unique
> identifier for a message. The generator of the message identifier
> MUST guarantee that the msg-id is unique. There are several
> algorithms that can be used to accomplish this. Since the msg-id has
> a similar syntax to addr-spec (identical except that quoted strings,
> comments, and folding white space are not allowed), a good method is
> to put the domain name (or a domain literal IP address) of the host
> on which the message identifier was created on the right-hand side of
> the "@" (since domain names and IP addresses are normally unique),
> and put a combination of the current absolute date and time along
> with some other currently unique (perhaps sequential) identifier
> available on the system (for example, a process id number) on the
> left-hand side. Though other algorithms will work, it is RECOMMENDED
> that the right-hand side contain some domain identifier (either of
> the host itself or otherwise) such that the generator of the message
> identifier can guarantee the uniqueness of the left-hand side within
> the scope of that domain.
> Or do you mean some other RFC, which one?
>> So the dns tests are just the first in the queue. The dimain must also
>> match early in the Reveived list.
> Huh? Even corrected for the obvious typos, this doesn"t make sense.
> We"re talking about the Message-ID here.
>> If you fail with it, then you have problems with every rfc-compliant
>> smtp server world-wide. This filter is especially useful against
>> scripts, spamming programs, and web-based mailers.
> You"re free to lose any incoming mail you like, including mine :-)
> Though apparently you do get my messages, so I am confused about what
> your filter actually does.
> --
> Please don"t Cc: me privately on mailing lists and Usenet,
> if you also post the followup to the list or newsgroup.
> Do obvious transformation on domain to reply privately _only_ on Usenet.
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