Re: [mailop] Storing 821 envelope recipients in an 822.Header?

[Gilles Chehade via mailop]

On Thu, Dec 08, 2016 at 12:00:28AM +1000, Michelle Sullivan wrote:
> David Hofstee wrote:
> > The X- type headers are deprecated... https://tools.ietf.org/html/rfc6648
> > 
> Oh now there's a bad idea if ever I heard one...
> 
> :/
> 

wow, missed that one :-/


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Gilles Chehade

https://www.poolp.org  @poolpOrg

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Re: [mailop] anyone from Microsoft around ?

[Gilles Chehade via mailop]

On Wed, Sep 21, 2016 at 06:32:45AM -0700, Steve Atkins wrote:
> 
> > 
> > Hi,
> > 
> > The following paste is a trace from the mta engine starting right after
> > STARTTLS is established:
> > 
> >http://pastebin.com/VY8zxcjQ
> > 
> > 
> > The following paste is a complete copy paste of the raw message as seen
> > in the Junk folder:
> > 
> >http://pastebin.com/uTyx90dE
> 
> Nothing stands out as being problematic in any of that. I'd guess it's
> not MTA-specific, rather something about the reputation (or lack thereof)
> of your smarthost from Microsoft's perspective, something content-related,
> or just MS being inscrutable.
> 
> ... uh, given you're doing MTA development, you don't have test autoresponders
> or anything else that might backscatter on that box, do you?
> 

not at all, I actually check manually :-)


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Gilles Chehade

https://www.poolp.org  @poolpOrg

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Re: [mailop] anyone from Microsoft around ?

[Gilles Chehade via mailop]

On Wed, Sep 21, 2016 at 05:49:48AM -0700, Steve Atkins wrote:
> 
> > On Sep 21, 2016, at 4:02 AM, Gilles Chehade  wrote:
> > 
> > 
> > I'm wondering if there is something wrong in the format of our headers
> > and if this could affect users of our software disregarding the kind
> > of mails they send with it. I've been tackling this for hours before
> > contacting the mailing list.
> > 
> > Any help would be greatly appreciated, I'm running out of ideas :-)
> 
> Sharing a sample of those headers on a paste site (and maybe
> a protocol level trace of a failing transaction) might get you some
> feedback on whether anything looks off about them.
> 

Hi,

The following paste is a trace from the mta engine starting right after
STARTTLS is established:

http://pastebin.com/VY8zxcjQ


The following paste is a complete copy paste of the raw message as seen
in the Junk folder:

http://pastebin.com/uTyx90dE


As I said earlier, I'm not necessarily looking to troubleshoot this one
particular message / domain, just trying to make sure that there is not
something in the MTA generated headers that makes microsoft unhappy, we
have been unable to find a single user that can inbox the most simple
mail at microsoft which worries me.

As a side note, two postfix users also went Junk by default so if I
can just rule out it's something bad that we, opensmtpd, do, I'll be
plenty happy ;-)

-- 
Gilles Chehade

https://www.poolp.org  @poolpOrg

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Re: [mailop] anyone from Microsoft around ?

[Gilles Chehade via mailop]

On Wed, Sep 21, 2016 at 11:56:14AM +, Eric Henson wrote:
> http://go.microsoft.com/fwlink/?LinkID=614866 
> 

Thanks, I was aware of this link however I'm more worried about a problem not
necessarily tied to my own case.

Another user using his own setup also gets spamboxed when mailing me, whereas
someone else using a different MTA doesn't get spamboxed.

I was hoping someone a bit technical could take a look at headers from a mail
I sent myself and tell me "yes there is something wrong, can't tell you what"
or "nope, the problem is not related to your message construct" so that I can
at least know I'm not going to spend time looking in the wrong directions ;-)

Sorry if this is not the right list to ask for similar questions but I know a
bunch of people here could help, trying my chance

Gilles



> -Original Message-
> From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Gilles Chehade
> Sent: Wednesday, September 21, 2016 6:02 AM
> To: mailop@mailop.org
> Subject: [mailop] anyone from Microsoft around ?
> 
> Hi,
> 
> I'm lead developer of an opensource MTA called OpenSMTPD.
> 
> We run a mailing-list for our project with very low volume, exchanging a few 
> thousands messages each month to around 400 people, very few of them being 
> hosted at big hosts, all of them having subscribed voluntarily.
> 
> In addition to this, we use a few mailboxes at major hosts and send some 
> mails every now and then to ensure we didn't break the smtp engine, this 
> usually amounts to less than 10 mails / month per big ISP.
> 
> All of these mails respect all best-practices that we know of:
> 
> - they are sent from long existing domains;
> - they are rate-limited despite low volume;
> - they are DKIM/DomainKeys signed;
> - DNS is properly configured with valid DNS/rDNS for the one IP address;
> - IP address is the same as the MX accepting mail for the domain;
> - SPF is properly declared, so is DMARC;
> 
> I checked senderscore and we actually send so few volume we don't even have a 
> reputation visible there.
> 
> I've started receiving complaints about users receiving their messages in the 
> spambox only at microsoft-hosted domains. No problem for gmail, yahoo, orange 
> and others, just microsoft.
> 
> I did some testing, and it turns out that even the simplest mails will end up 
> spamboxed no matter what machine or domain I use to send. The reason 
> advertised in the Microsoft appended domains may vary if I turn off DKim, 
> strip some or all Received lines, but basically no matter my configuration, 
> mails will not be inboxed.
> 
> I'm wondering if there is something wrong in the format of our headers and if 
> this could affect users of our software disregarding the kind of mails they 
> send with it. I've been tackling this for hours before contacting the mailing 
> list.
> 
> Any help would be greatly appreciated, I'm running out of ideas :-)
> 
> 
> --
> Gilles Chehade
> 
> https://www.poolp.org  @poolpOrg
> 
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-- 
Gilles Chehade

https://www.poolp.org  @poolpOrg

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