Re: Using dma for external incoming mail

On 10/07/2024 16:35, bob prohaska wrote:
> 
> On Wed, Jul 10, 2024 at 12:02:20AM +0200, Dag-Erling Smørgrav wrote:
>> bob prohaska <fbsd@www.zefox.net> writes:
>>> It looks like all I need is SPF and TLS, [...]
>>
>> You also need DKIM.
>>
> Going by: https://support.google.com/a/answer/81126?hl=en
> 
> If I'm reading right, that requirement applies only to
> senders of more than 5000 mails per day.  I'm sending
> one or two, at most.
> 
> Do I misunderstand something
> 
> Thanks for writing!

I maintain a small mail server with about dozen of active domains. 
Average traffic is under 50 outgoing messages per day but Gmail refused 
messages until I set SPF and DKIM for each domain. If there was ever a 
traffic of more than 5000 messages per day it was many years ago due to 
hacked sender account sending spam.
So I think it is very easy to be blocked by Gmail. It is not about 
domain, but by the IP of the server I think.

YMMV

Miroslav Lachman