Hello there,
I take the opportunity of this thread to expose my problem :) .
I got a strange issue while sending one mail to a gmail.com user. (tried
several times, also on an other gmail.com address with same result).
I already sent mails to this contact by the past without any problem.
Despite I try to respect all best practices on my mail servers (SPF,
DKIM, and DMARC), this time, I got a 550-5.7.1 error while attempting to
send this mail.
host gmail-smtp-in.l.google.com[74.125.133.27] said:
550-5.7.1 [XX.XX.XXX.XXX 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
550 5.7.1 for more information. y21si11188062wmj.56 - gsmtp (in reply to
end of DATA command
Don't really know if it is a IP reputation issue, or content issue : if
I send a mail to this gmail user without the attached file (this is a
screenshot in PNG format), I don't have this error, but maybe the mail
is flagged as "Spam" once received.
Yesterday, I added 3 of my domains on "Postmaster tools", and validated
them with a DNS TXT record. Don't know if this can solve the issue ?
If y21si11188062wmj.56 is an ID that Brandon can analyse, I can give
some others.
Regards,
Christophe.
Le 16/04/2019 à 18:02, Brandon Long via mailop a écrit :
Filling out the form multiple times is unlikely to help.
Policies don't change very often, but rules and ML models do. The
policy is still "if receivers mark your mail as spam, you're going to
have a bad time". The addenda would be "if we don't know who you are,
we aren't going to accept a lot of it" followed by "don't be too similar
to the bad guys"
Without info to investigate, not much we can do
Brandon
On Tue, Apr 16, 2019, 7:39 AM Brian Kantor <br...@ampr.org
<mailto:br...@ampr.org>> wrote:
I do not *know*, but mail that some months ago stopped going into
spam mail folders has recently resumed being 100% shunted as spam,
resulting in my inability to communicate directly with many clients.
- Brian
On Tue, Apr 16, 2019 at 10:12:26AM -0400, Rob Heilman via mailop wrote:
> Thanks, we started those last night. Might make it into an
hourly routine. Would be nice if their form had an incident ID to
help correlate the reports.
>
> Does anyone know if they recently made changes to their inbound
policies for DMARC/SPF/DKIM?
>
> -Rob Heilman
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