Showing posts with the label uceprotect

DNSBL Safety Report 5/14/2011

SpamTips.org, a website devoted to SpamAssassin Tips ( SpamAssassin being the wildly popular open-source spam filter) recently posted a wonderful DNSBL Safety Report , showing hit rates against both spam and non-spam (false positives) for various blacklists commonly used in SpamAssassin. Interestingly, they specifically warn AGAINST using UCEProtect and the Lashback UBL. For Lashback's U…
Read more

Top Five Tips for Dealing with Blacklists (Updated for 2024)

Is your IP address on a blocklist? What does that mean and what should you do about it? First, here's what you need to know about blocklists (aka blacklists). There are more than 90 blocklists out there in the world, and fewer than a dozen of them are actively used as …

Ask Al: Blacklisted IP Address?

Tayo writes, "Our Outlook client suddenly stopped relaying mails with the error "Sending' reported error (0x800CCC78) : 'Cannot send the message. Verify the e-mail address in your account properties. The server responded: 550 5.7.1 This system is configured …