Somewhat OT: Mail Relay Services

Tim Daneliuk tundra at
Mon Mar 1 00:19:47 UTC 2021

On 2/28/21 3:01 PM, Tim Daneliuk wrote:
> On 2/28/21 12:25 PM, matt at wrote:
>> Like anything to do with email, it's not entirely as simple as it sounds.
>> DuoCircle requires per-domain setup via their UI ("permitted senders"), plus
>> you need to set up SPF and DKIM keys for each domain.
>> This was a hard slog for 100+ domains but has been entirely worth the
>> initial effort and ongoing cost to avoid mail delivery complaints from
>> customers that are entirely beyond my control.
> Thanks Matt (and everynone else who had suggestions) -
> This seems to work just fine, as evidenced by the headers in this
> very email.

The only other thing I have found that I do not like is that DuoCircle
appears to  keep a copy of every email sent including the body content
in their logs.

Tim Daneliuk     tundra at
PGP Key:

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