I've been catching my customers left and right lately signing up for
some email warmup service. I don't know what it is. What they do is they
take SMTP credentials, payment, and then supposedly send a bunch of
random emails hosted at other providers and mark them as not spam. I'm
catching them by their email subject patterns, which you can see some of
here:
"The tall waitress seemed pretty pissed of | mur"
"Dave from the e | mur"
"Jordi was intimidated by the new board the day aft | mur"
Then, supposedly, they mark the emails as not spam so as to train the
other provider's spam filters to recognize their domain as not spam.
Every time I block their IPs they just spin up more AWS servers.
Now, I'm of the position that this makes the most sense when "warming
up" for a spam campaign, so my customers tend to meet my wrathful side
immediately upon alert that yet another has signed up, which is starting
to feel like every hour of every day with our growth rate. In addition
to that, I'm of the opinion that systematically working against another
provider's filters is a recipe for retaliation later in the form of IP
bans.
Better late than never, now to my questions. Have you noticed this
pattern? Do you see the correlation that I suspect, between this and
spam that follows? Do you have a position that you hold your
organization to in relation to this kind of activity? Does anyone know
what email warmup service generates those subjects above?
I'd like to get a better feel for how others in the industry react to
this kind of behavior.
<3
Jarland Donnell
MXroute Administrator
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