Archive for the ‘Email Security’ Category
Thursday, February 28th, 2008
If you have an email filtering service provider like Sentinare Messaging Solutions, Inc., then all your SMTP traffic should be coming from only the filtering provider and the filtering provider only. Therefore, you don't have to allow direct port 25 (SMTP traffic) to your email server any more and you ...
Posted in Email Security, Network Security, Spam Protection | No Comments »
Tuesday, February 26th, 2008
Spammers will ignore MX records sometimes and use "mail.somedomainname.com" to relay spam to. If you have an off-site email filtering service provider and you set all your MX records to their server, all your mail should go to the off-site email filtering provider's servers, according to the MX records, but ...
Posted in Email Security, Email Tips, Network Security | No Comments »
Thursday, February 21st, 2008
Email filtering service providers like Sentinare Messaging Solutions accept mail via MX records, filter out spam and viruses, and then, using SMTP, relay the email to the "destination relay", which is your mail server at your customer site. Typically you can configure the filtering service provider to relay to either ...
Posted in Email Security, Spam Protection | No Comments »
Monday, January 14th, 2008
Relying on just one form of protection (one layer of defense) for a given service is less safe than having more than one layer of defense protecting that service. For example, there is an often repeated analogy for security plans that rely only on firewalls: This is the cookie that ...
Posted in Email Security, Network Security, Virus Email Protection | No Comments »
Wednesday, January 9th, 2008
The most tangible benefit to an off-site email filtering proxy service like Sentinare PostGuard is that users stop getting spam and viruses in their inbox-- and your users will be very happy about that-- but that is only 50% of the true benefit to using filtering service. By using ...
Posted in Email Security, Network Security | No Comments »
Friday, January 4th, 2008
ISP's today are blocking port 25 from their users. This is a good thing. Originally mail servers didn't distinguish between (SMTP) mail traffic from servers and SMTP mail traffic from users. With the rising use of public networks by spammers, a method was developed to segregate server mail traffic from ...
Posted in Email Security, Outbound Email | No Comments »
Thursday, December 27th, 2007
In an article titled "Seven surefire strategies to block network attacks", Canadian security experts list email filtering as one of the most important security practices.
There are two benefits to using a provider like Sentinare Messaging Solutions.
Blocking spam and viruses: This is the most obvious benefit. Your users immediately will notice ...
Posted in Email Security, Network Security | No Comments »
