Recently, the company received a customer asked the relevant information
 
Reply is as follows:
Q: Is the mail server likely to be intercepted?
A: The opportunity is not large, because the mail server is responsible for receiving letters sent by internal users, and then through the Internet through the ISP through the Internet
    Sent to the other side of the ISP after the other mail server, the other side of the user to the mail server to receive, send mail process
    There are ISP checks so there is little chance of interception.
    Even if the hacker to intercept also spend more time to unpack, do not meet the benefits.
 
Q: If the mail server is blocked is not a big chance, that hackers use what way to obtain important letters to intercept.
A: The most likely way is in the CLIEN side is PC / NB / mobile phone implanted Trojan virus, shallow in the CLIEN side, side recorded keywords,
    Will be in line with the letter of a copy of the letter sent to the hacker, the hacker to change the letter to the sender account, with the letter issued by the user name,
    Contact the recipient.
    Another CLIENT side has been in the Trojan virus, so the relative password may also be intercepted, intercepted and then posted as WEBMAIL see the relevant letters.
 
Q: how to prevent?
A: 1. will be the user account password complex, every 1 to 3 months forced to use the replacement password.
    2. Please inform the company, the company does not easily change the remittance bank and account number. (Very important Very important Very important)
    3. Use the mail server auditing feature to review important key letters and then release them.