One very obvious one I hit right away. You seem to be sending from
@ccs.covici.com, and it has no SPF record:
https://www.whatsmydns.net/#TXT/ccs.covici.com
A good, solid SPF record is a bare minimum these days. Google is
requiring it more than ever, and while the message they're giving you
isn't the one I'm used to seeing for that, every negative point about
the email you send is a mark against you which means every aspect you
can improve on is relevant.
On 2023-01-17 18:03, John Covici via mailop wrote:
OK, well, now I can't send even to a single gmail address. What is
mail-tester.com --I have never used it? Is it a website?
On Tue, 17 Jan 2023 18:20:09 -0500,
Jarland Donnell via mailop wrote:
On 2023-01-17 17:06, John Covici via mailop wrote:
> Still broke for me.
I believe your issue was different from the one in this thread
and best summarized by your message in that separate thread:
On 2023-01-17 10:31, John Covici via mailop wrote:
> Hi. For some reason this morning, I am having problems sending to
> gmail addresses. I get the following error for each:
>
> <<< 550-5.7.1 [166.84.7.93 12] Our system has detected that this
> message is
> <<< 550-5.7.1 likely unsolicited mail. To reduce the amount of spam
> sent to Gmail,
> <<< 550-5.7.1 this message has been blocked. Please visit
> <<< 550-5.7.1
> https://support.google.com/mail/?p=UnsolicitedMessageError
> Now I have had no problems sending to gmail, but this message was
> send to maybe 40 users or so -- is this my problem, or am I doing
> something else wrong?
>
> Thanks in advance for any suggestions.
It's arguable which is worse, but this is definitely different
than spam folder delivery. I would argue your situation is better
because I'd rather know it wasn't delivered than tell someone to
check their spam folder, because people just don't and you have
little clear insight into the fact that they absolutely need to
look there. That said, I just performed a log audit and I do not
see a recent increase in these error messages from our side. I'm
not Google, obviously, but we process enough email that I feel
like polling my logs can easily indicate a trend of lack thereof.
My first instinct in your position would be to use something like
mail-tester.com to get a basic check over your headers, DNS,
etc. I know it's not wildly popular on this list but in a world
where the average user still runs to mxtoolbox, mail-tester.com
is exponentially better in it's assessments.
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