Comcast utilizes an RBL supplied by Vade, as the URL indicated. This has been remediated as of early this morning, and it was noted that it wasn’t a single IP in the /24 that was to blame (I don’t have more information than that currently).
-- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast From: mailop <[email protected]> On Behalf Of Scott Mutter via mailop Sent: Monday, August 16, 2021 9:08 PM To: [email protected] Subject: Re: [mailop] [EXTERNAL] Re: Vade - Blacklisting Thanks Alex. This looks to be working now. Was this being blocked by Comcast or by Vade? Unfortunately I don't have services or access to the whole /24. Tis a shame that an entire Class-C had to be blocked. On Mon, Aug 16, 2021 at 2:55 PM Brotman, Alex <[email protected]<mailto:[email protected]>> wrote: Not sure why my response didn’t go to the list: Scott, It looks like the /24 is blocked, and I’ll see if I can find out why (I’ll reply off-list with that info). In the meantime, we’ll put in an exemption for the range. That should be in place shortly. -- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast From: mailop <[email protected]<mailto:[email protected]>> On Behalf Of Scott Mutter via mailop Sent: Monday, August 16, 2021 2:25 PM To: [email protected]<mailto:[email protected]> Subject: [EXTERNAL] Re: [mailop] Vade - Blacklisting Got the response: Hello, Thank you for your report. It has been taken into account in our continuous improvement processus. We will get back to you if necessary. Please note that the analysis may take a few days and your situation might improve in the meantime. We advise you to keep an eye on your performance. Regards Your Anti-Abuse Vade team. And it's still blocked. Apologies because I'm probably not in the right state of mind right now. This is kind of a tipping point for me right now. Just really frustrated at providers like this that feel they can hold us hostage simply because we're not Microsoft, or Yahoo, or Google. I mean, if the IP is really sending out spam (why is it not on any other blacklist?) then I want to know. I want to remedy the situation. But to block an IP for no reason. To refuse to unblock an IP for no reason. ... Why is a reputable company like Comcast (?) going to bed with such an entity? On Mon, Aug 16, 2021 at 1:03 PM Al Iverson <[email protected]<mailto:[email protected]>> wrote: You might find https://sendertool.vadesecure.com/<https://urldefense.com/v3/__https:/sendertool.vadesecure.com/__;!!CQl3mcHX2A!XF25OLva-Ih77MhIuEK7cs4xHphSzQOYD2a2I7TNSNKYmE4d77DtUYCAr9wO2-RhgVAc$> to be a better way to work through the issue. Good luck, Al Iverson On Mon, Aug 16, 2021 at 12:24 PM Scott Mutter via mailop <[email protected]<mailto:[email protected]>> wrote: > > Anybody from Vade on the list able to give any details as to why > 66.11.124.112 is listed? > > Apparently Comcast uses Vade as part of their blacklist and this IP is being > blocked by Comcast's mail servers > > 554 resimta-po-40v.sys.comcast.net<http://resimta-po-40v.sys.comcast.net> > resimta-po-40v.sys.comcast.net<http://resimta-po-40v.sys.comcast.net> > 66.11.124.112 found on one or more DNSBLs, see > http://postmaster.comcast.net/smtp-error-codes.php#BL001000<https://urldefense.com/v3/__http:/postmaster.comcast.net/smtp-error-codes.php*BL001000__;Iw!!CQl3mcHX2A!XF25OLva-Ih77MhIuEK7cs4xHphSzQOYD2a2I7TNSNKYmE4d77DtUYCAr9wO26ZjDBa2$> > > Going to > http://postmaster.comcast.net/smtp-error-codes.php#BL001000<https://urldefense.com/v3/__http:/postmaster.comcast.net/smtp-error-codes.php*BL001000__;Iw!!CQl3mcHX2A!XF25OLva-Ih77MhIuEK7cs4xHphSzQOYD2a2I7TNSNKYmE4d77DtUYCAr9wO26ZjDBa2$> > leads to a spill where they pass the buck to Vade. > > Would really like to know why this IP is listed with Vade. Or does Vade just > add IPs to their blacklist because they can? > _______________________________________________ > mailop mailing list > [email protected]<mailto:[email protected]> > https://list.mailop.org/listinfo/mailop<https://urldefense.com/v3/__https:/list.mailop.org/listinfo/mailop__;!!CQl3mcHX2A!XF25OLva-Ih77MhIuEK7cs4xHphSzQOYD2a2I7TNSNKYmE4d77DtUYCAr9wO27e2wrTS$> -- Al Iverson // Wombatmail // Chicago Deliverability: https://spamresource.com<https://urldefense.com/v3/__https:/spamresource.com__;!!CQl3mcHX2A!XF25OLva-Ih77MhIuEK7cs4xHphSzQOYD2a2I7TNSNKYmE4d77DtUYCAr9wO20vhwXbl$> DNS Tools: https://xnnd.com<https://urldefense.com/v3/__https:/xnnd.com__;!!CQl3mcHX2A!XF25OLva-Ih77MhIuEK7cs4xHphSzQOYD2a2I7TNSNKYmE4d77DtUYCAr9wO2wEDljQc$>
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