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 ...
What Are The Different Types of End-to-End Email Encryption?
Imran HussainElectronic mail has been around since 1978 and is being used by billions of users on a daily basis. Privacy was not a big concern when it was introduced, and therefore, it lacks the essential security features necessary for private communication ...
How to Spot IRS Email Scams
Blake CohenThere are many scammers out there that try impersonating the IRS to fool unsuspecting victims into sending money or sensitive financial documents to them. Many of these are through phishing emails. Sending any information to these scammers could res ...
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 ...
Alternative to Barracuda Spam Filter
Blake CohenToday alone, the average office worker will receive over 120 emails, of which, over 50% will be considered spam messages. Sifting through dozens of junk messages can be a pain when you need to respond to emails to conduct business. This is precise ...
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 ...
Preventing Hackers From Stealing Passwords
Imran HussainIntruders enter through available doors. The more doors you have the more cautious you need to be to ensure no one can steal the identities of your users. In technical terms, these doors are analogous to servers listening for clients to connect. A typ ...
Tricky Spam Emails
Blake CohenPhishing emails are a common occurance where malicious senders will attempt to steal your personal information or passwords by pretending to be a trusted sender. Typically, you would receive an email that appeared to come from a trusted sender, suc ...
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 ...
Step-by-step guide to Install ClamAV & Integrate with Xeams
Mudit BhattWhat is ClamAV?ClamAV includes a number of utilities: a command-line scanner, automatic database updater and a scalable multi-threaded daemon, running on an anti-virus engine. ClamAV includes a multi-threaded scanning daemon, command line utilities for on ...
Importance of rejecting invalid email addresses
Imran HussainThere are two schools of thought when it comes to accepting emails sent to invalid addresses in an SMTP server: Reject the message without accepting it Accept an incoming message and then generate an NDR (non-delivery report) This difference ...
Steps to run email server in 10 minutes
Mudit BhattFollow these steps to run your own email server in 10 minutes. Step 1: Domain Name Get a domain name for yourself or your business. This can be done by visiting http://godaddy.com ( or another registrar of your choice). We will assume that your domain n ...
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 ...
How to Monitor Emails flowing in and out of Microsoft Exchange
Hong Gu Yoon...