I use Sendmail with an ISP relay, exactly as Imran describes. It's
worked fine for years though I'm not sending any bulk email.
Nowadays Sendmail encourages the use of its m4 macros so in my
seawasp.sendmail.mc I've got:
define(`SMART_HOST', `relay.plus.net.')
After running m4, this ends up in sendmail.cf as DSrelay.plus.net.
I'm top posting because everyone else has!
Steve
-------- Original Message --------
> I've taken to installing ssmtp on my raspberry Pis to send emails, and
> using my ISP's mail server as a forwarder (it's in my default Puppet
> configuration for new nodes).
>
> One simple config file, and you're set!
>
> Simon
>
> On 30/07/2018 21:20, Imran Chaudhry via Hampshire wrote:
>> I'm maintaining a server that configured using Sendmail to send
>> outbound mail to the Internet via a Smart Host, eg.
>>
>> # "Smart" relay host (may be null)
>> DS<mailhost of ISP>
>>
>> The ISP says that because we are hosting our own mailserver, we cannot
>> use their mailhost this way (eg. it's probably only for mail clients,
>> smaller usage etc)
>>
>> I understand that sendmail can be configured to just use itself
>> locally to send mail - happy days, but people have told me that it
>> might open up a can worms such as configuring SPF records etc.
>>
>> I would rather make as few changes as possible so as not to disrupt
>> the existing mail sending functions. Has anyone configured sendmail
>> like this and is simple or complex, any good pointers to guides etc?
>>
>> I know some of you might say "Dude, use Postfix|Exim" but I want the
>> changes to be as minimal as possible.
>>
>> Thanks!
>>
>
>
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