On 09 Dec 2020, at 03:00, Chris Green <c...@isbd.net> wrote:
> On Wed, Dec 09, 2020 at 02:33:37AM -0700, @lbutlr wrote:
>> On 08 Dec 2020, at 13:04, Chris Green <ch...@isbd.co.uk> wrote:
>>> On Tue, Dec 08, 2020 at 12:39:07PM -0700, @lbutlr wrote:
>>>> On 08 Dec 2020, at 10:56, Chris Green <c...@isbd.net> wrote:
>>>>> While I can look through the E-Mail header to see where the message
>>>>> has come from it would be good if I could somehow configure things so
>>>>> that the headers I normally see (From:, To: and Subject:) include
>>>>> something that indicates where the message is from.
>>>>
>>>> I would configure root to be an alias to root+machineID.
>>>>
>>> So how do I do that?
>>
>> Edit the .../postfix/aliases file and then run postalias on the file.
>>
> Ah, no, it never gets that far, I have:-
>
> luser_relay = m...@mydomain.co.uk
> local_recipient_maps =
Hmm. Might have to edit the /etc/aliases and run newalaises then.
But changing the name in /etc/password seems cleaner.
> There are no local recipients, that's the whole point. These messages
> will always be errors/warnings from daemons or cron processes on
> (mostly) headless systems that I want to see so I'm sending them off
> to myself.
Right, but cron and daemon emails do not need or use a postfix install by
default, so the question would be does the sendmail process or ssmtp read the
/etc/alaises? I THINK it does, but it's been a long time since I needed to do
this.
I do have one server that still does this, but it is currently offline until I
drive to the server room and push some buttons, so I can't double check exactly
how it is configured, but this is what an exchange looks like from that server:
[<-] 220 mail.covisp.net ESMTP Postfix 3.5.8
[->] EHLO mail.covisp.net:465
[<-] 250 CHUNKING
[->] AUTH LOGIN
[<-] 334 STUFF
[->] STUFF
[<-] 334 STUFF
[<-] 235 2.7.0 Authentication successful
[->] MAIL FROM:<r...@nmachineid.covisp.net>
[<-] 250 2.1.0 Ok
[->] RCPT TO:<root+machin...@covisp.net>
[<-] 250 2.1.5 Ok
[->] DATA
[<-] 354 End data with <CR><LF>.<CR><LF>
[->] Received: by mail.covisp.net:465 (sSMTP sendmail emulation); Sun, 29 Nov
2020 02:02:00 -0700
(But that's not postfix, but the very basic sSMTP, which works fine since that
server only generates a few cron/deamon messages per week)
--
Stupid men are often capable of things the clever would not dare to
contemplate... --Feet of Clay
