Re: [PLUG] Stupid question about antique Debian and mail settings

[Walt Mankowski via plug <plug@lists.phillylinux.org>]

On Tue, Jun 13, 2023 at 09:23:26AM -0400, Mike Leone via plug wrote:
> I'm an idiot, that's a given. :-)
> I have an antique version of Debian. When I say "antique", I mean:
> 
> vadmin@admnftp002:/etc$ lsb_release -a
> No LSB modules are available.
> Distributor ID: Ubuntu
> Description:    Ubuntu 9.10
> Release:        9.10
> Codename:       karmic
> 
> 
> LOL
> 
> 
> Anyway, this creaky old VM has been chugging along for like 12 years,
> doing 1 internal function (picking up files via scp, and putting them
> in a shared folder for a PeopleSoft process to come along and scoop
> up). Anyways, it sends an email when it's finished, using a simple
> "mailx" command (mailx -s "FIles here!" <recipient>
> <message-body.txt).
> 
> And I just now realized that it is not sending email anymore, because
> the host it's trying to send through no longer exists. (we have an
> internal host that does SMTP mail relaying, and it's been retired so
> it no longer exists. We have a new host, which uses a DNS alias these
> days, so changing hosts in the future won't matter, I'll just re-point
> the CNAME).
> 
> Anyways, I can't for the life of me remember where to change this
> setting in this old VM. I've searched, but I guess I am searching
> wrongly, since I'm not finding where to tell this host to use the new
> CNAME instead of the old retired name,
> 
>                    The mail system
> 
> <Michael.Leone@pha.phila.gov>: Host or domain name not found. Name service
>     error for name=admnlts002.wrk.ads.pha.phila.gov type=A: Host not found
> 
> That's the old SMTP mail relaying host (admnlts002) that doesn't exist
> anymore. I need to replace that name with the new name. And that's
> what I forget how to do. I don't think this VM uses sendmail (I don't
> see anything like sendmail.cf in /etc), but I don't know what it does
> use..
> 
> 
> Clue, anyone?

Hmm, maybe try running `dpkg -l` to get a list of all the packages,
and look for something with "mail" or "smtp" in the name? Or are there
any clues under /var/log?

Walt
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