Industry
2 min read
A spam filter is a program that can accurately predict whether someone will want to read an email message when it arrives in their inbox. To make accurate predictions, spam filters need samples of wanted and unwanted email. These samples are fed into classification algorithms to fine-tune their settings as the nature of spam changes over time.
Read post: Is there an open source spam filter?
Industry
8 min read
While inbound spam filtering is the most commonly considered form of filtering spam, outbound is just as important—perhaps even more so for hosting providers. Learn more about inbound and outbound spam; how they differ and which one your business needs.
Read post: Inbound Spam Filtering vs. Outbound Spam Filtering
Industry
4 min read
When an IP address sends spam, it will appear on various blacklists, including Spamhaus. Learn more about blacklisting; why and how it happens and how to avoid your IP address ending up on a blacklist.
Read post: Why Was My IP Address Blocklisted By Spamhaus?
Product
2 min read
MailChannels Inbound is a new cloud service that detects and blocks spam, phishing, and malware before it hits the customer’s inbox.
Read post: Introducing Inbound Filtering With Incredible Accuracy, Usability, and Support
Industry
5 min read
SMTP stands for Simple Mail Transfer Protocol. Discover how an SMTP relay service is crucial for web hosts as it guarantees emails sent from your server arrive in the recipients’ inboxes.
Read post: What Is an SMTP Relay and How Does It Work?
Industry
1 min read
In the first of a series of blog posts, we attempt to de-mystify the most common SMTP error codes, today we discuss the most popular error response from AOL.
Read post: Why Did I Get “521 5.2.1 : (CON:B1) http://postmaster.info.aol.com/errors/554conb1.html” Error?
Corporate
1 min read
Cybercriminals caught impersonating MailChannels with fake email bounce messages
Read post: Active Spoofing Attack Mimicks MailChannels Cloud Bounce Messages
Engineering
2 min read
Transport Layer Security (TLS) is an encryption protocol that ensures the privacy of SMTP traffic exchanged between mail servers.
Read post: Using Transport Layer Security (TLS) With a Transparent SMTP Proxy
Industry
4 min read
Many hosts who experience spam issues can be tempted to block port 25. However, this is merely a temporary solution to the problem.
Read post: Port 25: Why Keeping It Open Is Important
Industry
4 min read
A list of the world’s most popular SMTP response codes and what they mean.
Read post: Top SMTP Error Messages – June 2016Subscribe to the MailChannels Blog to receive new blog posts in your inbox.