[conspire] (forw) IP reputation of 96.95.217.99, pacbell.net's NDR

[Don Marti]

On 3/1/22 12:06, Rick Moen wrote:
> Mailing lists are inherently caught in the middle of the decades-long
> spam war.  Sometimes, even if you do everything right, some mail
> provider blacklists you for dumb or inexplicable reasons.  Seems like
> pacball.net recently did this to my linuxmafia.com server IP.
> 
> I may or may not get corrective action (or explanation).

I have had similar problems with deliverability to Hotmail, Yahoo, and 
Gmail, even though my server IP address has not been a spam source. If 
too much spam comes from nearby addresses sometimes a range of addresses 
gets blacklisted or just "bad reputation".

Latest stuff I had to do was reading these two articles and messing with 
DKIM.

https://bridge.grumpy-troll.org/2020/07/small-mailserver-bcp/

https://www.linode.com/docs/guides/configure-spf-and-dkim-in-postfix-on-debian-8/


> ----- Forwarded message from Rick Moen <rick at linuxmafia.com> -----
> 
> Date: Tue, 1 Mar 2022 12:03:49 -0800
> From: Rick Moen <rick at linuxmafia.com>
> To: abuse_rbl at abuse-att.net
> Subject: IP reputation of 96.95.217.99, pacbell.net's NDR
> Organization: If you lived here, you'd be $HOME already.
> 
> Dear NOC staff:
> 
> I'm owner/operator of linuxmafia.com, IP address 96.95.217.99, and
> have carefully run a clean, reputable mail operation for about forty years.
> It includes GNU Mailman mailing lists, such as the one your customer
> Walter Young <walyou at pacbell.net> joined.  I see that your MTA is now
> refusing the regular monthly password-subscription reminder to Mr.
> Young (generating the non-delivery report below), and I am mystified
> about why.
> 
> As I regularly do, I just checked my IP's RBL reputation at the
> multi-RBL engine at https://multirbl.valli.org/ .  247 RBLs are checked.
> In this case, 243 reported green (not listed), four failed to answer,
> and there were no blacklistings.
> 
> Multi-RBL site https://www.dnsbl.info/ likewise reports all green.
> https://mxtoolbox.com/blacklists.aspx shows 82 greens and one timeout.
> https://whatismyipaddress.com/blacklist-check shows all green.
> 
> May I ask, what is the basis of AT&T / pacbell.net's refusal?  Is there
> a complaint?  I will be glad to address & remedy any complaint I can.
> 
> -- Rick Moen
>     rick at linuxmafia.com
>     1-650-283-7902 cellular
> 
> 
> 
> ----- Forwarded message from Mail Delivery System <Mailer-Daemon at linuxmafia.com> -----
> 
> Date: Tue, 01 Mar 2022 05:00:29 -0800
> From: Mail Delivery System <Mailer-Daemon at linuxmafia.com>
> To: mailman-bounces at linuxmafia.com
> Subject: Mail delivery failed: returning message to sender
> 
> This message was created automatically by mail delivery software.
> 
> A message that you sent could not be delivered to one or more of its
> recipients. This is a permanent error. The following address(es) failed:
> 
>    walyou at pacbell.net
>      SMTP error from remote mail server after MAIL FROM:<mailman-bounces at linuxmafia.com>:
>      host ff-ip4-mx-vip1.prodigy.net [144.160.159.21]:
>      553 5.3.0 flpd577 DNSBL:RBL 521< 96.95.217.99 >_is_blocked.For assistance forward this error to abuse_rbl at abuse-att.net
> 
> ------ This is a copy of the message, including all the headers. ------
> 
> Return-path: <mailman-bounces at linuxmafia.com>
> Received: from localhost ([127.0.0.1] helo=linuxmafia.com)
> 	by linuxmafia.com with esmtp (Exim 4.72)
> 	(envelope-from <mailman-bounces at linuxmafia.com>)
> 	id 1nP27A-0006hb-CM
> 	for walyou at pacbell.net; Tue, 01 Mar 2022 05:00:28 -0800
> MIME-Version: 1.0
> Content-Type: text/plain; charset="us-ascii"
> Content-Transfer-Encoding: 7bit
> Subject: linuxmafia.com mailing list memberships reminder
> From: mailman-owner at linuxmafia.com
> To: walyou at pacbell.net
> X-No-Archive: yes
> Message-ID: <mailman.139.1646139603.25299.mailman at linuxmafia.com>
> Date: Tue, 01 Mar 2022 05:00:03 -0800
> Precedence: bulk
> X-BeenThere: mailman at linuxmafia.com
> X-Mailman-Version: 2.1.13
> List-Id: Mailman site list <mailman.linuxmafia.com>
> X-List-Administrivia: yes
> Sender: mailman-bounces at linuxmafia.com
> Errors-To: mailman-bounces at linuxmafia.com
> X-SA-Exim-Connect-IP: 127.0.0.1
> X-SA-Exim-Mail-From: mailman-bounces at linuxmafia.com
> X-SA-Exim-Scanned: No (on linuxmafia.com); SAEximRunCond expanded to false
> 
> This is a reminder, sent out once a month, about your linuxmafia.com
> mailing list memberships.  It includes your subscription info and how
> to use it to change it or unsubscribe from a list.
> 
> You can visit the URLs to change your membership status or
> configuration, including unsubscribing, setting digest-style delivery
> or disabling delivery altogether (e.g., for a vacation), and so on.
> 
> In addition to the URL interfaces, you can also use email to make such
> changes.  For more info, send a message to the '-request' address of
> the list (for example, mailman-request at linuxmafia.com) containing just
> the word 'help' in the message body, and an email message will be sent
> to you with instructions.
> 
> If you have questions, problems, comments, etc, send them to
> mailman-owner at linuxmafia.com.  Thanks!
> 
> Passwords for walyou at pacbell.net:
> 
> List                                     Password // URL
> ----                                     --------
> conspire at linuxmafia.com                  [REDACTED]
> http://linuxmafia.com/mailman/options/conspire/walyou%40pacbell.net
> 
> 
> ----- End forwarded message -----
> 
> ----- End forwarded message -----
> 
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