Regarding my now-closed “Offloading Mail Services” post:
I have identified a potential issue with using these outbound SMTP services.
Using DuoCircle’s outbound SMTP service, I still have delivery issues.
Not 100% sure it’s responsible but their relay is applying spf authentication to my client.
Even though I authenticate with a username / password and pay $ with a company CC, they still authenticate my client mailer (claws mail on rocky 9.2) using spf and add the following header:
ARC-Authentication-Results: i=1; outbound4.ore.mailhop.org; spf=fail smtp.mailfrom=xioplex.com smtp.remote-ip=<verizon residential ip>; dmarc=none header.from=xioplex.com; arc=none header.oldest-pass=0;
You can see
This is because I do not have
<verizon residential ip> in my spf record (which of course I should not for various reasons).
Ultimately when sending a message to Gmail, selecting “Show original” indicates
Although it’s not tagged as SPAM, this and the presence of the fios residential ip is the only thing I can see that would cause this error message.
So it seems sending email from a residential IP for a custom domain is proving to be exceptionally difficult.
The only way I can conceive of doing it would be to send mail from my mail server so that I can put it in the spf record and run a DKIM service (this still doesn’t solve periodically being listed on the UCEPROTECT scammers RBLs).
Or find some outbound SMTP service that does NOT authenticate my client mailer using spf (which I would think should be ok if they have all of my intimate details like CC and company info).
Either that or just give-in and use web-mail.
But I REALLY don’t want to give-in and let microsoft or google or anyone else host my private company email.
Ideas would be appricated.