Industry
1 min read
In this post, we discuss what fakemx.net is, and why it’s generating temporary delivery failure notices in your mail server logs.
Read post: What is fakemx.net and why are they temp failing me?
Industry
2 min read
We explain why Yahoo! fails connections to its mail servers with error: 421 4.7.0 [TS01] Messages from 1.2.3.4 temporarily deferred due to user complaints.
Read post: Why Is Yahoo! Temp Failing My Mail?
Industry
3 min read
A summary of the top-50 most popular SMTP error responses, as collected at a major web hosting provider.
Read post: Most popular SMTP responses – updated for August 2012
Industry
1 min read
How did I get 412,139 spam messages in my Gmail spam box?
Read post: How did I get 412,139 spam messages in my Gmail spam box?
Industry
1 min read
A bug in various software components caused a severe global outage of various services including the popular social news site Reddit.
Read post: The leap second that killed the Internet (well, parts of it)
Industry
2 min read
Someone recently stole 6.5 million passwords from LinkedIn, publishing a list of SHA1 password hashes. We explain why we think these weren’t brute forced.
Read post: LinkedIn Password Leak: Probably Not Brute ForcedIndustry
1 min read
Spamhaus blacklists the Direct Marketing Association (DMA)
Read post: Spamhaus blocks the Direct Marketing Association
Industry
1 min read
Outbound spam filtering for IaaS providers
Read post: Outbound spam filtering for IaaS providers
Industry
1 min read
Is Email Really Dying in the Enterprise?
Read post: Is Email Really Dying in the Enterprise?
Industry
1 min read
At least one compromised web site has been discovered, which runs Bitcoin mining software within visitors’ web browsers.
Read post: Bitcoin Mining Coming to a Compromised Web Site Near YouSubscribe to the MailChannels Blog to receive new blog posts in your inbox.