Re: [mailop] [EXTERNAL] Re: BIMI

-- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast > -Original Message- > From: mailop On Behalf Of John R Levine via > mailop > Sent: Tuesday, December 10, 2019 8:32 PM > To: Brandon Long > Cc: mailop > Subject: [EXTERNAL] Re: [mailop] BIMI > > > I sadly realize that

Re: [mailop] [EXTERNAL] Re: BIMI

tablishes a payment mechanism for receivers, which they can exert on > email marketing companies and their customers. "We will not display your > company logo in the (web)mail client unless you pay us money." > [Brotman, Alexander] None of the Mail Box Providers involved (thus far

Re: [mailop] [EXTERNAL] Comcast.net contact ? Unusually high amount of email being deferred.

All, generally speaking, you can reach us at delivery-supp...@cable.comcast.com That goes to a number of engineers, some operational folks, and I think a manager or two. It has pretty good visibility. I've already reached out to Ryan off-list. -- A

Re: [mailop] [EXTERNAL] Comcast postmaster for throttling

Jan-Philipp, I’ll respond again off-list. Generally, folks can use delivery-supp...@cable.comcast.com for issues with “comcast.net” (the .com is a different group, but we can help reach out if needed). -- Alex Brotman Sr. Engineer, Anti-Abuse & Messa

[mailop] Comcast - MTA-STS Outbound

As of this morning, we've completed the deployment of MTA-STS on our outbound systems. If you believe this is impacting delivery to your systems, please let me know. We'll incorporate the resulting data into our TLSRPT reports shortly (along with the already existing DANE-related information).

Re: [mailop] Resolving issues for several yahoo domains?

Sent: Thursday, September 5, 2019 11:52 AM To: Brotman, Alexander Cc: mailop@mailop.org Subject: [EXTERNAL] RE: [mailop] Resolving issues for several yahoo domains? Alex How many connections does Comcast allow from a single source before Comcast either starts limiting connections or outright blocks

Re: [mailop] Resolving issues for several yahoo domains?

One of the interesting things I’ve learned while interacting with ESPs is that some of them will artificially restrict the number of messages per session, in lieu of opening more sessions. Some of them have told me the values are in the low single digits. I’ve kind of wondered the rationale for

Re: [mailop] [EXTERNAL] Comcast contact?

Brett, I can take a look at this. Is that the only IP? -- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast From: mailop On Behalf Of Brett Schenker via mailop Sent: Tuesday, August 13, 2019 12:18 PM To: Aaron C. de Bruyn via mailop Subject: [EXTERNAL] [mailop] Comcast contact?

[mailop] NameCheap Contact

Anyone have a contact at NameCheap that they'd be willing to share? Thank you -- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop

[mailop] ConvertKit

Does anyone have a contact at this ESP that they'd be willing to share? (beyond support@) Thank you -- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/ma

Re: [mailop] [EXTERNAL] Re: charter.net contact

I had already forwarded this to folks at Charter, and they said they'd been able to contact Marc. Sorry, should have confirmed back here. -- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast > -Original Message- > From: mailop On Behalf Of Anne P. Mitchell, > Esq. > Sent

Re: [mailop] CenturyLink Contact

I forwarded this to a contact at CenturyLink who has gotten in contact with Michael. -- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast From: mailop On Behalf Of Michael E. Weisel Sent: Monday, February 4, 2019 5:35 PM To: mailop@mailop.org Subject: [EXTERNAL] [mailop] CenturyL

Re: [mailop] [EXTERNAL] Re: Comcast Contact

Rob, The distro Anthony provided should be fine for comcast.net recipients. I’ll respond once it gets there. -- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast From: mailop On Behalf Of Anthony Chiulli Sent: Wednesday, January 30, 2019 4:14 PM To: Rob Heilman Cc: Mailop List

Re: [mailop] Business justification for DNSSEC?

OPENPGPKEY and SMIME/A also use DNSSEC, if you're interested in those protections for your users. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast > -Original Message- > From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Jesse > Thompson via mailop > Sent: Monday, October 15,

Re: [mailop] [EXTERNAL] Comcast contact? bounce.care.comcast.com

Carl, You can contact me off-list with specific details if you have more information. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast -Original Message- From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Carl Byington Sent: Monday, June 25, 2018 12:09 PM To: mailop@mailop.org

Re: [mailop] [EXTERNAL] Re: Disabling TLS1.0 for SMTP

If someone is interested, we could potentially ask Binu if he has newer data available. He had done a presentation on the same data at M3AAWG a few years ago. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast -Original Message- From: mailop [mailto:mailop-boun...@mailop.org] On Behalf

[mailop] Tutanota Contact

Hello, I'm looking for a contact from Tutanota. It would be great if they could contact me off-list. Thanks for any leads. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-b

Re: [mailop] Quick question on Comcast FBL...

So, this isn't truly my part of the platform, but I can tell you that I've heard that in some of these cases the things I've heard. This seems to mostly be related to folks switching to a new email client using IMAP. The new client believes it knows better than your last, and begins to reclass

Re: [mailop] TLS support

This is a tad dated, but: https://static.googleusercontent.com/media/research.google.com/en//pubs/archive/43962.pdf -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast From: mailop [mailto:mailop-boun...@mai

Re: [mailop] Extreme amounts of SMTP auth from microsoft/outlook IPs

Not sure if I'd call it extreme, but a marked increase beginning Feb 6th. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast -Original Message- From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Dan Malm Sent: Friday, February 09, 2018 3:57 AM To: mailop@mailop.org Subject: [ma

Re: [mailop] Comcast Feedback Loop emails that look legitimate

Tim, Yes-ish. We do treat the action of moving a message to the spam folder the same as clicking the "Spam" button. This is fairly common. It can make for mistakes if someone is dragging a message and accidentally drops the message in the wrong place. We've seen instances where someone atte

Re: [mailop] Comcast timeouts

There was an issue with some backend systems, which I’ve been told are now resolved. Things are still being cleaned up. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Russell Clemings Sent: Wednesday, September 20, 2017 2:31 PM To:

[mailop] MySpace Contact

Does anyone have a contact at MySpace? Attempt to their postmaster address resulted in a mail loop bounce. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast ___ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinf

[mailop] Southwest Airlines Contact

Anyone have someone at Southwest Airlines that we could contact?This is more about transactional than marketing, but I'd be happy to talk to anyone within their organization. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast ___ mailop mailing li

[mailop] Comcast Deliverability Contact (comcast.net)

Hello Folks, We recently received an escalation to our group via a person that no longer works with our group. This isn't truly a problem, and we understand this may happen. That being said, I wanted to share with others that if you're having deliverability issues with "comcast.net" recipient

Re: [mailop] Anyone experiencing problems sending to Comcast business today?

Tim, I'll reply offlist and see if I can get some additional information. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast x5364 From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of timrutherf...@c4.net Sent: Thursday, December 08, 2016 1:12 PM To: mailop@mailop.org Subject: [mailop] An

Re: [mailop] Comcast FBL - Erroneous Reports

Justin, We’d already seen the issue and the short-term fix has been rolled out. We’re taking a look at longer-term solutions. Thanks for the heads-up. -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast x5364 From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Justin Frechette Sent: Tue

Re: [mailop] Embarq / CenturyLink Spam Blacklisting

I believe their operations are run/supported by Synacor http://synacor.com/contact-us/ -- Alex Brotman Sr. Engineer, Anti-Abuse Comcast x5364 From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Ryan Timmons Sent: Monday, October 10, 2016 9:54 AM To: mailop Subject: [mailop] Embarq /

[mailop] SBA.gov Contact

We're seeing an issue with delivering to sba.gov. The DNS servers we reference from these MTAs are showing SERVFAIL for a PTR lookup on 165.110.5.75. http://dnsviz.net/d/75.5.110.165.in-addr.arpa/dnssec/ seems to imply they're having a DNSSEC issue (unless I'm misinterpreting the output). T