[RTTY] This is why you are having trouble with the reflector

[Al Kozakiewicz]

I explained this over on TT.

The explanation is complicated but let me see if I can distill it down here: A fairly common technique to reduce spam is to not deliver emails from servers if that server is not listed as authorized to send on behalf of a domain (e..g. yahoo.com).  The decision whether or not to publish this information is optional, as well as the decision of what to do with the information if it is available.

To use yahoo.com as just one example, it has decided to implement a variant of this technology.  It publishes to the internet a list of IP addresses that are allowed to send email claiming to originate from yahoo.com. The problem occurs because contesting.com sends out its emails as claiming to come from the sender of the post.  So joeham at yahoo.com posts to the RTTY reflector.  Contesting.com sends out his post to all subscribers of the list, including billham at gmail.com.  Gmail has decided to implement spf (that's the name of one variant of the technology described above) and when their incoming email server receives a delivery attempt from contesting.com, it checks with yahoo.com to see if the server at contesting.com is on yahoo's list of authotized servers. It's not, so gmail refuses delivery of joeham's post.  No spam, no junk email, nothing at all gets delivered to the gmail user.

The only practical fix for this problem is to reconfigure contesting.com to send out email with the FROM: clause as being a contesting.com email address and not the address of the post originator.  It makes replying directly to the originator difficult, but if the only other choice is no delivery at all, then it seems like a reasonable compromise.

Al
AB2ZY

________________________________________
From: RTTY [rtty-bounces at contesting.com] On Behalf Of John L Merrill [johnn1jm at gmail.com]
Sent: Thursday, April 17, 2014 9:20 AM
To: rtty at contesting.com
Subject: Re: [RTTY] This is why you are having trouble with the reflector

I have three email accounts registered with this reflector-icloud, gmail and
webmail.wit.edu. Only the icloud.com got the message of hold due to bounces.
I don't think it has anything to do with only sending a message to the
reflector but receiving. I haven't sent a message to this reflector for
quite awhile up until this message.

73, John N1JM

-----Original Message-----
From: RTTY [mailto:rtty-bounces at contesting.com] On Behalf Of John GW4SKA
Sent: Thursday, April 17, 2014 03:18
To: W0MU Mike Fatchett; rtty at contesting.com
Subject: Re: [RTTY] This is why you are having trouble with the reflector

Can someone explain what, if anything, I can do to avoid this problem in the
future?

I have read the posts and looked at other information on the internet. My
mail address is not Yahoo, Hotmail etc. so is the problem with the original
sender of the mail?

Keep it simple if possible ... I have never understood all the complexities
of how email works .. like many others, I am just a computer *user* !

John GW4SKA


----- Original Message -----
From: "W0MU Mike Fatchett" <w0mu at w0mu.com>
To: <rtty at contesting.com>
Sent: Thursday, April 17, 2014 6:26 AM
Subject: Re: [RTTY] This is why you are having trouble with the reflector


> Bill,
>
> There is no fixing this.  The companies have made a stupid change to their

> email systems.  The solution is to not use yahoo, hotmail, etc.  There is
> a huge thread on this at Towertalk.  It is effecting lots of people.
>
> Mike W0MU
>
> On 4/16/2014 10:42 PM, Bill Turner wrote:
>> ORIGINAL MESSAGE:          (may be snipped)
>>
>> On 4/16/2014 8:22 PM, Jeff Stai wrote:
>>> emails.
>>>
>>> So because your email address domain (e.g. yahoo.com) does not match the
>>> sending domain (e.g. contesting.com) a whole bunch of servers are
>>> bouncing
>>> your reflector emails. And the reflectors are unsubscribing you because
>>> of
>>> too many bounces.
>>
>> REPLY:
>>
>> Actually, nobody is getting unsubscribed but rather being put on a
>> temporary hold status because of too many bounces. You need to talk to
>> your ISP (yahoo.com, hotmail.com or whoever) and get this rectified.
>>
>> In the meantime, if you email me direct I will re-instate your service
>> immediately, but of course, the same thing could happen again if the
>> problem with your ISP is not fixed.
>>
>> Also please note that with some ISPs (such as mine) you will not see your

>> own messages to the reflector. They do this to save bandwidth, so they
>> say. My ISP is based on Google, and I I am told that gmail does the same
>> thing. You can overcome this by cc'ing or bcc'ing yourself if you wish.
>>
>> 73, Bill W6WRT
>> RTTY List Administrator at contesting.com
>> dezrat1242 at wildblue.net
>> _______________________________________________
>> RTTY mailing list
>> RTTY at contesting.com
>> http://lists.contesting.com/mailman/listinfo/rtty
>
> _______________________________________________
> RTTY mailing list
> RTTY at contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
>
>
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