Wandering Thoughts archives

2016-07-27:	When 'simple' DNS blocklists work well for you
2016-07-06:	It turns out that viruses do try to conceal their ZIP files
2016-06-30:	What makes a email MIME part an attachment?
2016-06-27:	If you send email, don't expect people to help you with abuse handling
2016-06-12:	There are (at least) two sorts of DNS blocklists
2016-06-02:	Spammers can abandon SMTP connections not infrequently
2016-05-27:	Your overall anti-spam system should have manual emergency blocks
2016-05-22:	My view of Barracuda's public DNSBL
2016-05-19:	Some basic data on the hit rate of the Spamhaus DBL here
2016-04-29:	You should plan for your anti-spam scanner malfunctioning someday
2016-04-28:	You should probably track what types of files your users get in email
2016-04-19:	Today's odd spammer behavior for sender addresses
2016-04-10:	SPF is not a security feature, as it solves the wrong problem
2016-03-20:	What broad hit rate the Spamhaus DBL might get for us
2016-03-18:	The Spamhaus DBL does get hits even with basic checks
2016-02-28:	The status of null-sender spam from outlook.com
2016-02-15:	SMTP submission ratelimits should have delays too
2016-02-14:	Your outgoing mail system should have a per-sender stop switch
2016-02-12:	We need to deploy anti-spam precautions even if they're a bit imperfect
2016-01-08:	Getting to watch a significant spam campaign recently
2016-01-03:	One anti-spam thing I like is per-person (or per-address) blocklists

(Previous year)

By month for 2016: Jan Feb Mar Apr May Jun Jul; before 2016.