2017-08-16, 21:44
(2017-08-16, 20:49)allsorts Wrote: Can you not look in the logs of blocked connection attempts at around the time a new post appears in a thread you are subcribed to *and* have email notifications for turn on?
Whilst spam can be a problem blocking huge IP ranges is, IMHO, using a sledge hammer to crack a nut and highly likely to have unintended effects. I also run my own email server and get between zero and one spam email per week in my inbox.
The vast majority is trapped before being queued by http://www.spamhaus.org, a few by http://www.uceprotect.net or http://www.spamcop.net and a plugin that checks that the sender waits for the SMTP greeting. Spamassassin weeds out almost everything else from messages that actually get queued.
My server has denied 575 connections over the last 4d 19h 38m. At least that's what my script that parses the qpsmtpd log file tells me, however the log format changed slightly recently and I'm not sure that is capturing all the "denied" emails. I seem to remember that 500 denied connections/day was not uncommon but spam attempts do vary quite a bit.
It's not a matter of keeping spam out of MY mailbox. It's not a matter of SPAM or email at all really. It's a matter of stopping the foreign HACKERS who are CONSTANTLY attacking my server trying to compromise my CLIENTS.
Bottom Line: If you are an IP address range owner, I tell you when bad actors are using your IP range... If you fail to address the issue (as you are REQUIRED to do), I ban your IP range and report you.
PS - The info@blitzortung.org email is still delayed delivery claiming insufficient storage.
This message was created automatically by mail delivery software.
A message that you sent has not yet been delivered to one or more of its
recipients after more than 72 hours on the queue on accucl387.cr1.com.
The message identifier is: 1dgxT8-0001LB-5H
The subject of the message is: Station 1961, no activation email...
The date of the message is: Sun, 13 Aug 2017 13:18:33 -0500
The address to which the message has not yet been delivered is:
info@blitzortung.org
host mx20.kundencontroller.de [85.31.185.119]
Delay reason: SMTP error from remote mail server after pipelined MAIL FROM:<cautery@montac.com> SIZE=4575:
452 4.3.1 Insufficient system storage
No action is required on your part. Delivery attempts will continue for
some time, and this warning may be repeated at intervals if the message
remains undelivered. Eventually the mail delivery software will give up,
and when that happens, the message will be returned to you.
Stations: 1961