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From: René Hedemyr <rene@20post.com>
To: After Effects Mail List <AE-List@media-motion.tv>
Sent: Friday, May 9, 2014 4:44 AM
Subject: Re: [AE] AE list bounce WARNING messages - a quick explanation

Big thank you to Chris and David for explaining this.

The Media-motion.tv list server is an email server of it’s own with it’s own IP address 62.181.193.71, that I was given by my ISP. 

If another customer at my ISP have another mail server that is sending out spam, our server could be blocked because it’s in the same IP address range, e.i. 62.181.xxx.xxx and therefore Gmail block everything that starts with 62.181.xxx.xxx

The information about DMARC is new to me, and I’m now googling (is that a verb?) it for information about how to change the DNS zone file which is at GoDaddy

Hopefully this will solve the amount of bounce messages we get from the media-motion server. I got my mail at Gmail so I also get them, sometimes several times a day. 

It’s VERY important that you reply to these bounce messages as it is written in them, so the server will continue to send you messages from the list.

I’m really sorry for these bounce messages, but this is how the media-motion list server correctly reacts when trying to send you an email and Gmail among others are not accepting the mail.

I’ll spend more time during this weekend to this matter.

Med vänlig hälsning / Kind Regards 

 

		René Hedemyr  Post Producer / Key Account Manager  Chief 20  TWENTYPOST AB  RÃ¥dmansgatan 20 | SE-114 25 Stockholm | Phone: +46-8-506 350 76  rene@20post.com | www.20post.com

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2014-05-08 19:39 GMT+02:00 David Baud <david.baud@gmail.com>:

Thank you Chris for sharing this information.

I am still having issues with my gmail account. After doing some research, and to add to Chris information, it looks like the implementation of the new version (starting in April) of Domain-based Message Authentication, Reporting & Conformance (DMARC) might be responsible to some of the problems we are experiencing.  I am wondering if the servers hosting our email lists have to comply in some way with the new DMARC specifications?  (René do you know anything about it?) Could it be that the roll out across the servers has not been completed yet? It looks like that most of the big players have implemented DMARC (Google, Yahoo, Microsoft, AOL,…)


DMARC - What is it?
source: DMARC.org

DMARC, which stands for "Domain-based Message Authentication, Reporting & Conformance", is a technical specification created by a group of organizations that want to help reduce the potential for email-based abuse by solving a couple of long-standing operational, deployment, and reporting issues related to email authentication protocols.

DMARC standardizes how email receivers perform email authentication using the well-known SPF and DKIM mechanisms. This means that senders will experience consistent authentication results for their messages at AOL, Gmail, Hotmail, Yahoo! and any other email receiver implementing DMARC. We hope this will encourage senders to more broadly authenticate their outbound email which can make email a more reliable way to communicate.

Why is DMARC Important?

With the rise of the social internet and the ubiquity of e-commerce, spammers and phishers have a tremendous financial incentive to compromise user accounts, enabling theft of passwords, bank accounts, credit cards, and more. Email is easy to spoof and criminals have found spoofing to be a proven way to exploit user trust of well-known brands. Simply inserting the logo of a well known brand into an email gives it instant legitimacy with many users.

Users can't tell a real message from a fake one, and large mailbox providers have to make very difficult (and frequently incorrect) choices about which messages to deliver and which ones might harm users. Senders remain largely unaware of problems with their authentication practices because there's no scalable way for them to indicate they want feedback and where it should be sent. Those attempting new SPF and DKIM deployment proceed very slowly and cautiously because the lack of feedback also means they have no good way to monitor progress and debug problems.

DMARC addresses these issues, helping email senders and receivers work together to better secure emails, protecting users and brands from painfully costly abuse.

How Does DMARC Work?

A DMARC policy allows a sender to indicate that their emails are protected by SPF and/or DKIM, and tells a receiver what to do if neither of those authentication methods passes - such as junk or reject the message. DMARC removes guesswork from the receiver's handling of these failed messages, limiting or eliminating the user's exposure to potentially fraudulent & harmful messages. DMARC also provides a way for the email receiver to report back to the sender about messages that pass and/or fail DMARC evaluation.

David Baud

K O S M O S     P R O D U C T i O N S

david@kosmos-productions.com

www.kosmos-productions.com

On May 8, 2014, at 6:11 , Chris Zwar <chris@chriszwar.com> wrote:

So what is probably happening with the AE list is that somewhere, a mail server is experiencing an unusually large amount of SPAM traffic, and so it has been blocked by other ISPs at a very basic level.  This is not the same as being added to a SPAM blacklist, or having AE list emails being confused as SPAM.  That's not happening.  It just means that some services (such as Gmail) are refusing ALL emails that come from the same mail server - whether it's a legitimate AE list email or one selling discount meds and so on…