<div>
<div class="content wysiwyg-content">
I have noticed that my Symantec Mail Security for SMTP filter appliance will automatically throw out email messages sent to us that do not contain anything in the &quot;Subject&quot;. &nbsp;The messages will not be delivered locally at all, and I can track the messages, but it shows nothing in the dispositions and action taken fields. &nbsp;I can not find any kind of default filter policy for Subjects in my version of Symantec that could be set to delete messages automatically with no subject, nor can I find a policy to set to allow messages with no subject to be delivered by default. &nbsp;Is there something I am overlooking? Or is it possible that this version does not support this feature and I have to enforce a Subject policy to make sure everyone who sends to my domain has a subject? &nbsp;
</div>
</div>


I have noticed that my Symantec Mail Security for SMTP filter appliance will automatically throw out email messages sent to us that do not contain anything in the "Subject".  The messages will not be delivered locally at all, and I can track the messages, but it shows nothing in the dispositions and action taken fields.  I can not find any kind of default filter policy for Subjects in my version of Symantec that could be set to delete messages automatically with no subject, nor can I find a policy to set to allow messages with no subject to be delivered by default.  Is there something I am overlooking? Or is it possible that this version does not support this feature and I have to enforce a Subject policy to make sure everyone who sends to my domain has a subject?  

Symantec Mail Security for SMTP &quot;no subject&quot; filtering

Anti-virus software was originally developed to detect and remove computer viruses. However, with the proliferation of other kinds of malware, antivirus software started to provide protection from other computer threats. In particular, modern antivirus software can protect from malicious browser helper objects (BHOs), browser hijackers, ransomware, keyloggers, backdoors, rootkits, trojan horses, worms, malicious layered service providers (LSPs), dialers, fraud tools, adware and spyware. Some products also include protection from other computer threats, such as infected and malicious URLs, spam, scam and phishing attacks, online identity theft (privacy), online banking attacks, social engineering techniques, Advanced Persistent Threat (APT), botnets and DDoS attacks.

Anti-Virus Apps

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.

AntiSpam

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Symantec Mail Security for SMTP &quot;no subject&quot; filtering

Symantec Mail Security for SMTP "no subject" filtering