On Sat, 19 Feb 2022, Greg Troxel wrote:
As for your "domain", also look up the IP address your mail comes from, because
that's more important.
A lookup service I have found useful is:
https://multirbl.valli.org/
Ok, actually, I got some interesting results for 136.143.188.53, which
is a Zoho server I have apparently sent mail from. Some blacklists,
some yellow lists, some whitelists, and a bunch of blue and red. Do
you think Zoho is the bigger problem than NameCheap?
I said you should understand if you have a shared IP, and *who else is
sharing it*. When they spam, it gets the IP on lists, which causes you
trouble.
...or *who had it before you did* (particularly for static or
not-so-dynamic dynamic IPs).
A spammer could have set up a "throwaway" server and blasted spam from
that IP until it got blacklisted, then moved on, leaving you to inherit an
IP with a bad reputation.
That may or may not be an easy problem to address. Potentially the
simplest solution is to ask your provider to assign you a different IP
address and hope that one isn't listed as well. You could proactively
spot-check IP addresses in the network block managed by your provider and
if a more than a few of them are listed (particularly by multiple DNSBLs)
then your provider is probably problematic and you should look elsewhere.
[Ooo, look, the .sigmonster is listening...]
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
jhar...@impsec.org pgpk -a jhar...@impsec.org
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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