On 2018-02-02 10:47, Chris wrote:
On Fri, 02 Feb 2018 16:52:16 +0000
Ken O'Driscoll via mailop wrote:
On Fri, 2018-02-02 at 17:26 +0100, Chris wrote:
I'm a bit surprised, that on a small mail server, 77 % of the
rejected mails are rejected because of invalid recipient adresses.
22 % because of DNSBL.
Is this ratio normal?
Assuming you're talking about inbound emails and wondering why more
mails aren't being caught by RBLs.
Yes, inbound. I'm wondering why there are so many mails to
not-existing recipients.
Are they real messages or bounces? I'm currently seeing a few domains
receiving massive floods of bounces, some spammer seems to be using
$firstname$randomnumber@$variousdomain forged addresses to send tons and
tons of spam. Nothing of the outbound message touches anything I
control, it seems to be bot originated.
I own a couple domains that are being hit, one I can guarantee that I've
never used addresses in that format and the other was used by various
throwaway email addresses generated by multiple people. Both are domains
I have owned for 10-15+ years, and I'm moderately comfortable saying
that I am the first registrant in both cases.
It's been on and off for a few months but it seems to hit the same
domains when it happens.
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