That email addy is from an employee that just left the company. For any of the administrators it should be safe to remove the subscription for that address. ( I can confirm directly from my company email account if that's required for confirmation. )

I can try and chase someone internally to see if I can get the auto-responder replied stopped to the list. 

On Fri, Dec 14, 2018 at 2:32 PM Josh Luthman <josh@imaginenetworksllc.com> wrote:
Yes.  Same email address.

Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373


On Fri, Dec 14, 2018 at 1:59 PM Dan Hollis <goemon@sasami.anime.net> wrote:
Yes, someone needs to forcefully remove this subscription:

Subject: Re: Your message to lemanm@yahoo-inc.com (was:  Re: Extending network over a dry pair)


On Fri, 14 Dec 2018, Grant Taylor via NANOG wrote:

> Is anyone else receiving the "Your message to REDACTED (was: $oldSubject)"
> auto-responses to posts to NANOG?
>
> I've been seeing them for three or four days now.
>
>
>
> --
> Grant. . . .
> unix || die
>
>