Mail Not Delivered

Mail Not Delivered

Question:
Quite a few users keep getting a message saying their e-mail did not reach the intendedrecipients, and also that there was a communication error and the sender has beenrejected.

Could you explain this?

Answer:
There are a number of reasons why e-mail might get bounced back, but since yourmessage specifies a “communication error” I’ll touch on that aspect.

Usually that error is due to either a service outage on your end or on theirs (i.e., yourconnection (or theirs) is down).

You might also see that message (though it might specify “host unreachable”) if thedomain name of their address is incorrect (“microsfot.com” for example) or if it can’t belocated in DNS, because your DNS settings are incorrect, the DNS server is down, ortheir domain is not properly registered.

If it’s happening to “quite a few users,” the problem sounds pretty pervasive so I’d start bymaking sure that you have proper DNS settings and that the DNS server(s) you’re using isO.K.

Share the Post:
XDR solutions

The Benefits of Using XDR Solutions

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved

AI is revolutionizing fraud detection

How AI is Revolutionizing Fraud Detection

Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across

AI innovation

Companies Leading AI Innovation in 2023

Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several

data fivetran pricing

Fivetran Pricing Explained

One of the biggest trends of the 21st century is the massive surge in analytics. Analytics is the process of utilizing data to drive future decision-making. With so much of

kubernetes logging

Kubernetes Logging: What You Need to Know

Kubernetes from Google is one of the most popular open-source and free container management solutions made to make managing and deploying applications easier. It has a solid architecture that makes

ransomware cyber attack

Why Is Ransomware Such a Major Threat?

One of the most significant cyber threats faced by modern organizations is a ransomware attack. Ransomware attacks have grown in both sophistication and frequency over the past few years, forcing

data dictionary

Tools You Need to Make a Data Dictionary

Data dictionaries are crucial for organizations of all sizes that deal with large amounts of data. they are centralized repositories of all the data in organizations, including metadata such as