61 entries in SORBS, last January 23rd .
This should be noted to your ESP, but you may be in a bit of cleft stick
in this situation - changing IPs or upgrading to a exclusive IP would
still require reputation to be maintained, but shared IPs in a lot of
ESPs now suffer from this kind of issue.
Simon
On 24/02/2023 17:51, Mark Milhollan via mailop wrote:
On Fri, 24 Feb 2023, Christine Borgia wrote:
I have a customer whose email campaign was heavily
blocked yesterday by Gmail with the error:
421 4.7.0 [149.72.90.158 15] Our system has detected that this
message is
suspicious due to the very low reputation of the sending domain. To best
protect our users from spam, the message has been blocked. Please visit
https://support.google.com/mail/answer/188131 for more information.
v14-20020a05620a440e00b0073ba7884843si8095361qkp.8 - gsmtp
Did you read the link? Does your ESP have a postmaster account? If
they don't send enough messages ("a large volume") to Gmail they won't
provide any information about reputation, except that that itself
indicates that you haven't (and can't) collect enough reputation to be
other than low aka poor. SORBS certainly doesn't like that IP address.
/mark
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