RE: Comcast mail contact

[Brotman, Alex via NANOG]

Nathanael,

You can reach out to me privately if you'd like.  Typically those are related 
to DNS being unable to resolve an MX/A/ for your 5321 Mail From domain, but 
I can take a better look to be sure.

--
Alex Brotman
Sr. Engineer, Anti-Abuse & Messaging Policy
Comcast

> -Original Message-
> From: NANOG  On
> Behalf Of Nathanael Cariaga
> Sent: Wednesday, May 5, 2021 2:18 PM
> To: NANOG 
> Subject: Comcast mail contact
>
> Anyone from Comcast on this list?  would appreciate if you can reach out off 
> the
> list.  Have a few concerns regarding Comcast servers intermittently throwing
> 550.5.1.0 -- invalid domain errors.

Re: Comcast mail contact

[Mike Hammett]

https://list.mailop.org/listinfo/mailop 




- 
Mike Hammett 
Intelligent Computing Solutions 
http://www.ics-il.com 

Midwest-IX 
http://www.midwest-ix.com 

- Original Message -

From: "Nathanael Cariaga"  
To: "NANOG"  
Sent: Wednesday, May 5, 2021 1:17:46 PM 
Subject: Comcast mail contact 

Anyone from Comcast on this list? would appreciate if you can reach 
out off the list. Have a few concerns regarding Comcast servers 
intermittently throwing 550.5.1.0 -- invalid domain errors. 

Comcast mail contact

[Nathanael Cariaga]

Anyone from Comcast on this list?  would appreciate if you can reach
out off the list.  Have a few concerns regarding Comcast servers
intermittently throwing  550.5.1.0 -- invalid domain errors.