Any publicly facing server is vulnerable to attacks from the Internet. These attacks are typically severe 
	against well-known servers like SMTP and HTTP since the TCP/IP port for these services is publicly known. 
	Hackers know that most email servers will contain user login information allowing them to send outbound 
	emails, increasing its vulnerability. This article talks about some best practices to prevent hackers from
	guess passwords through your email server.
	
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