HELP ... Not receiving email messages from particular Yahoo Group

Question

Ever since the evening of 3/26 every member of my Yahoo Group with an email address from Comcast.net has not been able to reliably receive messages from the group. Out of over 40 emails since then, we've received 4 (2 on 4/1 and 2 this morning). There are no error messages involved, there are just no emails in our inboxes. Yahoo does not indicate that any of the messages have "bounced". The messages are not in my spam folder (in fact, the first Comcast "helper" i worked with had me turn off the spam filter in Comcast,net) Oddly, I (and the others) can receive messages from other Yahoo Groups that we are members of, just not ours: SoundOfNewEngland I was on the phone with Comcast for 2.5 HOURS on 4/3 and was basically told that since I could receive a test message from Comcast that the error must be with Yahoo!   After contacting Yahoo, I was told that since others in the group can receive the messages, that the error must be with Comcast. <sigh> The last email I got from Yahoo said that Comcast would need to add Yahoo info into the Comcast whitelist. I told this to a Comcast technician during a help chat on 4/5 ... and she told me to fill out this form: http://www.comcastsupport.com/sdcxuser/asp/comcast_blockedprovider.asp I did that even tho the issue is that the Yahoo Group's messages were being blocked and I didn't have an IP address for those, but I could provide the domain name:  yahoogroups.com I tried to put the info that Yahoo Groups gave me for the whitelist, but the description is limited to 1024 characters  Needless to say, I have not received a resonse from Comcast within 24 hours of posting the form  Here is the info from Yahoo!: "Since you have already reviewed your settings, and confirmed that the emails are not landing in your spam folder, you will need to follow up with your email provider again, since it appears that they are dropping emails from the group. Email providers generally do this because they think a message is spam, and they are particularly likely to use this approach with bulk messages coming from an email list.
If you have not done so already, you can provide them with the following link:
http://tech.groups.yahoo.com/group/ygmailadmin/
There, they can find a current list of all of our outgoing email servers for white listing.
They can also contact the owner of this official Yahoo! Group, for further assistance in troubleshooting this issue, by sending an email to:
[email protected]    However, if your email provider continues to fail to deliver your Yahoo! Group messages, we strongly suggest you consider changing your email provider to another provider who will. This doesn't necessarily mean you need to change your ISP. You can also use a free Web-based email service like Yahoo! Mail or Hotmail while retaining your current ISP." If it helps, the Yahoo incident # is: 120402-011733 It's not a big group, only 86 members. All together we generate maybe 100 messages a month ... not even close to being considered spam.  Most of the members are older and not comfortable with new technology. Asking them to create new emails is not an option.  This group is our primary means of communicating with each other, so the sooner we get this resolved, the less stress for my members! I'm sorry for the length of this message, i'm just trying to provide all the detail i can.  I hope you can help. Thanks,Carol 

Answer 1

more info: I usually get my mail using Outlook, but the messages are not there when I view them directly on Comcast.net either ....  I'm using Chrome for a browser and have VISTA for my OS Here's a message header from the most recent email sent to the group that I did not receive (i will xxx out the email addresses) at my Comcast address but DID receive at my Yahoo address:
 From Eileen Fri Apr 6 11:56:17 2012
X-Apparently-To: [email protected] via 72.30.239.82; Fri, 06 Apr 2012 11:56:22 -0700
Return-Path: <sentto-512785-10246-1333738581-sxxxxxxx1=[e-mail]>
Received-SPF: none (domain of returns.groups.yahoo.com does not designate permitted sender hosts)
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X-Originating-IP: [98.139.165.5]
Authentication-Results: mta1260.mail.ac4.yahoo.com from=yahoogroups.com; domainkeys=pass (ok); from=yahoogroups.com; dkim=pass (ok)
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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoogroups.com; s=lima; t=1333738582; bh=sG8gHMXUATS8FPacoEmQj76vBTuNbmLCXaXWAAi6isw=; h=Received:Received:X-Yahoo-Newman-Id:X-Sender:X-Apparently-To:X-Received:X-Received:X-Received:X-IronPort-AV:X-Received:X-Received:To:Cc:Thread-Topic:Thread-Index:Message-ID:Accept-Language:Content-Language:X-MS-Has-Attach:X-MS-TNEF-Correlator:acceptlanguage:X-Originating-IP:X-eGroups-Msg-Info:From:Sender:MIME-Version:Mailing-List: Delivered-To:List-Id: Precedence:List-Unsubscribe: Date:Subject:X-Yahoo-Newman-Property:Content-Type; b=Rm1y/6pBXsTuRSaDcXiCTVvq2gag2bxCn33QtzJ758CZ+3HKtQKe+XN6lTdZpP+/vDm8tdDSIdtzb9KhdtvVWcJXijUMLCdwNCBpJGVkKxX14dHjh2y/SRJ+4lHzbXvh
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by m4.grp.sp2.yahoo.com with QMQP; 6 Apr 2012 18:56:20 -0000
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To: "'[email protected]'" <[email protected]>
Cc: "'[email protected]'" <[email protected]>
Thread-Topic: fittings
Thread-Index: Ac0UJvLIs9IpwqtfSy+hSVXx3b26bQ==
Message-ID: <[email protected]>
Accept-Language: en-US
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From: Eileen <[email protected]>
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Mailing-List: list [email protected]; contact [email protected]
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Date: Fri, 6 Apr 2012 14:56:17 -0400
Subject: [SONE] fittings
X-Yahoo-Newman-Property: groups-email-tradh-m
Content-Type: multipart/alternative;
boundary="_000_69C23C04D36F874092DCF98593C8DA539D4824864BEXMBCL1health_"
Content-Length: 7828  Thank you for any guidance you can provide