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Symantec rejects email to one specific recepient. &nbsp;We use POP3 hosted email. &nbsp;No Exchange. &nbsp;<br />
When I send it to pop  Symantec antivirus window pops up and tells me it was undeliverable.<br />
I uploaded the error message print screen.<br />
<br />
Anyone saw that before?<br />
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clip-image001.jpg

Symantec rejects email to one specific recepient.  We use POP3 hosted email.  No Exchange.  
When I send it to pop  Symantec antivirus window pops up and tells me it was undeliverable.
I uploaded the error message print screen.

Anyone saw that before?

Symantec rejects message with attachments.

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

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.

Email Protocols

An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.