Leveraging Outbound SMTP Proxy Server Can Protect Your Organization From Blacklisting
Spam email is one of the major causes of phishing attacks and malware infections. These emails are not only harmful to the recipient, but they can also be detrimental to the server they are being sent from. If any spam emails originate from any particular SMTP server or network, it simply means that the authenticity of any email being sent from that network is questionable. Any email received from such an SMTP server can end up in the trash or spam folder of the recipient. In the worst-case scenario, they might be filtered by spam filtering tools.
Using the SMTP proxy server along with their actual SMTP server is the solution here for SMTP users. SMTP proxy server is a relay service that can provide an additional layer of security to any SMTP server while receiving or sending emails. There are two types of SMTP proxy service:
Inbound SMTP Proxy Server
Inbound SMTP proxy server is used to verify and authenticate incoming traffic. If any flagged or blacklisted email is received in incoming traffic, then the inbound SMTP proxy server can block them before they are received at the actual SMTP server.
Inbound SMTP service protects users against phishing attacks and malicious spams. It allows users a great deal of safety is the first line of defense.
Outbound SMTP Proxy Server
Similarly, outbound SMTP proxy service is used for checking outgoing traffic. Outbound spam filtering can be used to make sure any emails sent through the actual SMTP server are already verified by SMTP proxy. Therefore, any spam email is verified before they get to the incoming SMTP server of the recipient.
What makes outbound SMTP proxy server significant is that it allows organizations to maintain the credibility of their SMTP mail servers. Any email sent from a maliciously infected computer can further spread the infection into the receiver’s computer. As such, SMTP proxy service allows the sender to maintain authenticity against threats of being blacklisted.
There are two types of outbound SMTP filtering, including open source and paid SMTP proxy services. Detailed information about both types are as follows:
Outbound spam filtering: open source
There are outbound spam filtering open-source SMTP proxy relays that organizations can use with their actual SMTP server. MailCleaner & Proxmox are two such examples that provide open-source SMTP proxy service.
Outbound spam filtering: Office 365
Microsoft owned tool Office 365, allows any user to efficiently utilize outbound spam filter to check and verify any email that is sent through their SMTP server. Outbound spam office 365 is an easy tool that can be integrated with the user’s actual SMTP mail server for inbound or outbound spam filtering.
Using inbound and outbound SMTP proxy servers is a must for enterprises. Inbound SMTP proxy service can protect your valuable information systems against any phishing or malicious attacks executed by cyber attackers. Similarly, outbound SMTP proxy service can protect the recipients from any phishing or malicious attacks sent through their network, intentionally or unintentionally.
Final Words
Once an SMTP server is reported as a malicious outbound server, it can be blacklisted by spam filtering tools. If the server is blacklisted, a sent email could end up in the spam folder of some recipient, which is a grave threat to the organization’s authenticity and brand value. Such blacklisting can also result in reduced sales, inefficient digital marketing, and communication gaps between the sender and the receiver. Using Outbound SMTP Proxy Servers can help you, and your organization avoid this grave risk effectively and efficiently.
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