Troubleshooting Emails when sending messages to Gmail
Hong Gu YoonWhen running an email server, it is very important to make sure your server is properly configured. Failure to do so will result in your IP address being blacklisted, which can result in email delivery failures. If you are having issues sending outbound e ...
What makes a good spam filter solution?
Hong Gu YoonEmails, especially for small businesses and large companies, are an important key for communication. With the increasing amount of emails being sent and received every day, the abundance of spam messages has become a huge problem. Spam interferes with com ...
The Importance of a PTR Record
Hong Gu YoonSMTP, or Simple Mail Transfer Protocol, is a protocol used for sending and relaying messages over networks. SMTP defines rules and conventions for how email messages should be transferred and submitted. When implementing an in-house-SMTP server, so ...
How to prevent large PST files in Exchange
Hong Gu YoonIt's important for companies to make sure email messages are flowing in and out smoothly. The greater the amount of emails received in your email server, the greater the disk space will be used. In Exchange, users' mailboxes are saved in a PST file. These ...
Alternative to SpamAssassin
Hong Gu YoonAlternative to SpamAssassin SpamAssassin is a free and open source spam filtering solution. It helps block many emails by using a scoring system. When an email comes in, SpamAssassin uses rules to see if the filter matches. The total score will det ...
Alternative to Postfix
Hong Gu YoonWhen it comes to email servers, there are benefits to hosting a in-house email server. These advantages include having full control of your server as well as having privacy where no third party will have access to your emails. There are numerous in-ho ...
How to be HIPAA Compliant with Emails
Hong Gu YoonHIPAA and Emails Working in the medical field requires you to be in constant, quick contact with not you’re your colleagues but patients as well. Emails are quick, efficient, and accessible to everyone. However, while sending both personal and priv ...
How to Monitor Secure Logins
Hong Gu YoonAs an administrator, it's crucial for all of your users to make sure they are connected securely. Data being compromised is no joke; sensitive information such as credit card, social security, tax return numbers and even passwords are exchanged throug ...
Introducing SynRBL
Hong Gu YoonThere are many methods of catching spam emails. Some of these methods include; content filters which inspect the message content to determine if a message is junk or not, Bayesian filters that calculate the probability of a message being spam based o ...
What is a Reverse NDR Attack
Hong Gu YoonThe non-delivery report (NDR) is generated when an email message is not able to be sent to the next hop. Spammers can use NDR as a method to generate spam towards victims by using the victim's email address as the sender. This is called a reverse NDR ...
About Hong Gu Yoon
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