Re: [PLUG] OpenSMTPD RFC 2822 Error

["N. Albert via plug" <plug@lists.phillylinux.org>]

I like running my own mail servers, though I've always found Postfix and 
Exim a real pain to configure. More than once I've done so improperly 
with unintended consequences. Even as I type this, I have an issue on 
one machine where exim is not more aggressively retrying sending mail 
through my main relay server, resulted in very delayed or unsent 
messages stuck in queue.
I've found it way easier to write my own mail server from scratch - the 
RFCs are a lot easier to understand than postfix/exim configs, and I 
have a much better understanding of how everything works and what to 
configure than I would otherwise. Troubleshooting is way easier when 
it's your code on both sides of the connection.
Yes... sometimes I suffer from NIH syndrome...

On 12/5/2023 2:51 PM, JP Vossen via plug wrote:
> "eMail servers are complex beasts."  Yup.  And we've had advice on 
> this list about... "and don't do that, it's too painful."  I've been 
> running Postfix for home use for, I forget, decades at least, and I've 
> found that low volume home use is not that big a deal if you're an IT 
> geek.  It's certainly not a Mom&Pop service.
>
> It won't be ready to help Casey now, but Michael Lucas (_Absolute 
> FreeBSD_ and many others) is working on a book:
> * Technology stack|https://mwl.io/archives/22911
> * Sponsorship Open: “Run Your Own Mail 
> Server”|https://mwl.io/archives/22665
>
>
> On 12/5/23 11:01 AM, Casey Bralla via plug wrote:
> ...
>
> > Gotta start re-digging into the settings. Wow, eMail servers are
> > complex beasts.
> >
> > On 2023-12-05 10:46 AM, N. Albert via plug wrote:
> >  > On 12/5/2023 10:17 AM, Casey Bralla via plug wrote:
> >  >>
> >  >> I'm building an OpenSMTPD mailer server in a virtualbox test
> >  >> environment.  The test environment has a Bind9 DNS service running
> >  >> that recognizes XYZ.com as a valid domain.  The test OpenSMTPD mail
> >  >> server is listed in the DNS as the mail server for that domain.
> ...
>
> Later,
> JP
> -- -------------------------------------------------------------------
> JP Vossen, CISSP | http://www.jpsdomain.org/ | http://bashcookbook.com/
>
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