The difference in philosophy on this topic is actually one of the more
interesting discussions I've seen in a while. I'll throw my hat in the
ring and see if it shakes loose any additional valuable opinions.
I can't block Gmail IPs, at all. It's on average 48% of who my clients
communicate with. While they may be sympathetic to the fact that an IP
of theirs sent spam, they will not hold anyone accountable for their
missed email but me. So it comes down to this philosophical question:
If a tree falls in the woods and no one is there to hear it, does it
make a sound? Similarly, if I block a Gmail IP for sending spam and I
have no customers because they all left when I blocked Gmail IPs, am I
holding anyone accountable or am I merely choosing not to feed my kids
out of principle and then wondering why no one cares about my protest?
I actually do lose customers now because I block SendGrid IPs when they
are identified as having sent spam to a customer (and only then). Many
of my customers would rather their neighbors receive an endless barrage
spam than hold one company accountable for trying to save money by using
SendGrid shared IPs. But I take this stand, and I lose those customers,
because it's a fight I decided to be statistically worth picking. Gmail
is one fight I can't afford to pick though (assuming I would, and I'm
not even really saying that I want to).
Do any of you feel as though you could hold Gmail accountable for
anything and actually be heard at the same time? Because if you get
fired as admin, or your users leave you, what good is theoretically
holding them accountable? Genuine question, not meant to be
confrontational.
On 2022-09-14 00:24, Jay Hennigan via mailop wrote:
On 9/13/22 16:13, John Levine via mailop wrote:
Um, why is it Google's fault that some random blacklist erroneously
listed some of their IPs?
As someone else said, it only makes sense to block IPs if you believe
they will never, ever send mail your users want.
That's not how blocklists work. They lists IPs that are sources of
spam.
Mailservers get compromised. Client accounts get phished or hijacked
by spammers and used for a spam run. Spammers sign up with freemail
providers and send spam.
Blocklists absolutely should list these as spam sources, because they
are in fact spam sources. And when the spam problem is fixed, they
should delist them.
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