2017-08-16, 20:49
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.
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.