[ale] SMTP recommendation?

[James Sumners (ALE)]

🤔


sendmail.org seems light on documentation.

On December 8, 2021 at 10:13:16, Bob Toxen (transam at verysecurelinux.com) wrote:

I find Sendmail, with all its warts, easier to install and maintain  
than Postfix but then I've been managing it since shortly after  
I knew Eric Allman at Berkeley ;^)  

I find Postfix annoying and time consuming to install and maintain  
but then I've not used it much.  

On Mon, Dec 06, 2021 at 05:48:26PM -0500, James Sumners (ALE) via Ale wrote:  
> It's been many years since I've dealt with setting up an SMTP server to  
actually send mail all over the Internet. But I find myself in a bit of  
an annoyance with my mail provider. The short version is they support an  
incoming catch all feature that will deliver mail for any unrecognized  
recipient to a designated mailbox, e.g. for foobar at example.com,  
'footer' isn't a known recipient so that mail will be delivered to  
catchall at example.com; but they do not support _sending_ as any sender. I  
use this catchall to register accounts, e.g. amazon at example.com or  
some-random-site at example.com, so that I can see exactly who has decided  
to ignore my opt-out preferences or is selling my email address. But  
sometimes I need to send an email as that identity so that I can get  
support, and my provider isn't supporting it. So I want to setup my  
own SMTP server that only sends mail and will send as any sender for  
the domain I have configured as the allowed domain.  

> I suspect Postfix is the appropriate tool, but am open to any of them  
> (e.g. exim). But what would you use? Are you able to provide a minimal  
> example configuration?  

> Ideally I would run this process in a Docker container and do TLS  
> termination at my existing HAProxy instance.  
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