[ale] SMTP recommendation?

[Bob Toxen]

Get yourself a copy of

  Linux Sendmail Administration (Craig Hunt Linux Library) 1st Edition

  https://www.amazon.com/Linux-Sendmail-Administration-Craig-Library/dp/0782127371/ref=sr_1_6?keywords=sendmail&qid=1639240196&s=books&sr=1-6

There's also doc as part of the Sendmail package.

Bob

On Thu, Dec 09, 2021 at 06:38:02PM -0500, James Sumners (ALE) via Ale wrote:
> ????
> 
> 
> 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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