[DECtalk] Think I fixed the bouncing problem

[Jayson Smith]

Hi,

You implement SPF with a TXT record in the DNS for your domain. I'm not 
sure of the exact syntax, but No-IP, the domain registrar and DNS 
provider I use, provides a wizard to create proper SPF records.

DKIM is another matter entirely, and requires involvement from your MTA. 
I'm currently using Sendmail, which doesn't appear to have native 
support for DKIM unfortunately.
Jayson

On 7/24/2014 2:11 AM, Tony Baechler via Dectalk wrote:
> Are you implementing SPF and domainkeys?  I have noticed that Google and
> Earthlink both look at the SPF headers.  When I was running a mailing list
> on Mailman, I got a ton of bounces due to the mail being sent as bulk and no
> SPF or domainkeys headers.  I never could figure out how to get either
> working in Postfix, but it looks like Exim includes at least SPF support.
> If you can share how you got the bounces fixed, I would appreciate the help.
>   I had to give up on the Mailman list because of the bounces.
>
> On 2014-07-22 03:34 PM, Jayson Smith via Dectalk wrote:
>> Hello all,
>>
>> Certain Email providers such as Yahoo, Hotmail, and Comcast, seem to have
>> suddenly implemented new policies which made specific types of messages to
>> this list bounce. I've upgraded the mailing list software on my server and
>> changed a setting, so this should now be fixed. You'll probably notice that
>> the From: line of list messages now looks a bit different. This is a
>> necessary consequence of the change required to bring messages into
>> compliance with these large providers' policies.
>>
>> In short, whenever someone with an Email address at one of these providers
>> sent a message to the list, and the list would send the same message to all
>> the subscribers, when those providers saw a message which appeared to be
>> from their own domains, but wasn't coming from their servers, they would
>> reject the message. E.G. someone with a yahoo.com address sends a message to
>> the list. The list sends that message to everybody. Suddenly, Yahoo is
>> seeing messages which claim to be from that yahoo.com address, but rather
>> than coming from a Yahoo server, they're coming from bluegrasspals.com.
>> Understandably, Yahoo doesn't like that. I've hopefully fixed this. Please
>> let me know if you see anything wrong/broken/weird as a result of this change.
>> Jayson
>>
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