The Domain-Based Message Authentication, Reporting, and Conformance (DMARC) authentication standa...

An open relay is an improperly configured Simple Transfer Mail Protocol (SMTP) server allowing th...

An open proxy is a server that acts as a "middle-man" for requests from one server or network to ...

The key differences between the Mail From (MFrom) address and the From address include: The send...

Some Simple Mail Transfer Protocol (SMTP) servers are configured to reject your email if the reve...

Domain Name System (DNS) changes typically take up to 24 hours to take effect. It is the projecte...

List-unsubscribe resources RFC 2369 RFC 8058 Follow the steps below to implement the List-Unsub...

There are many different options for Mail Transfer Agent (MTA) software. Some of the more widely ...

Yes, email can be sent from IPv6 IP addresses. Your email server, or Mail Transfer Agent (MTA), ...

At this time, there is no proof that Transport Layer Security (TLS) improves deliverability. Howe...

There are three different types of Domain-based Message Authentication Reporting and Conformance ...

IPv6 uses a 128-bit address which allows for 2128 , or approximately 3.4 x 1038 addresses. 3.4 x ...

An important decision you have to make as an email marketer is whether to send your email from de...

The d= field in DomainKeys Identified Mail (DKIM) is the domain of the entity signing the email m...

Forward Confirmed Reverse DNS (FCrDNS) is a DNS technical configuration that shows a relationship...

When DomainKeys Identified Mail (DKIM) was put into practice, it made the use of DomainKeys obsol...

Determining how many IP addresses your email marketing program needs can be difficult. Whether or...

Sender host names must clearly identify their sending identity. When scaling your Mail Transfer A...

For an email to be delivered, it must have a valid address that follows certain rules of syntax. ...