Sendmail Security

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; SendMail is widely used and flexible, it has a variety of ways of working and can act as a variety of roles. SendMail can be used as the mail router, SMTP client, and SMTP service program.     However, it does not perform the final mail delivery. SendMail ...

SMTP server Code of Practice: Incoming messages. Check the address of the message. If the address of the message is a local address, save the message for retrieval. If it is a remote address, forward the message. The SMTP server features the same as the packet router, except that the SMTP service is dedicated to mail. Most SMTP servers can store and forward messages as needed. The SMTP server has security requirements on two different tasks: Protect the server from being compromised. The server must be equipped with protective armor to prevent external attacks, if the external offensive success will make the attackers unauthorized ...

People often ask me if they really should believe in Oss. In other words, the worry is: is the OSS the angel that brings us a good life, or is it a demon that destroys our lives? As a matter of fact, this problem has been raised since the beginning of Linux and various BSD (Berkeley Software distribution) operating systems. In reality, any organization or enterprise is very cautious in planning to use a free software that is not from a reputable merchant. As a routine, generally ...

1. SQL Slammer a week after Microsoft released its SQL patch, the flaw was presented at the Black Hat meeting by researchers David. The Slammer worm, which used the flaw, made the internet a big jam in 2003. 2. In April 2005, researchers at Windows Plug and Play Internet security systems discovered the Windows flaw, which enabled hackers to control defective systems and execute code remotely. By August, there had been a Zotob worm using the flaw. 3, Cisco IOS Stack Overflow ...

Security is a huge and challenging subject, but everyone who works on the server side should know the basic steps. Cameron outlines some ways to keep your user account clean and secure. Security is a big problem. It's not going to be the same, and it's hard to know how much it needs to scale: if you're not careful, when your boss really wants to keep the doorman from seeing his annual budget, you finally believe that he needs to understand the benefits of security. No matter how challenging it is to keep up with trends in all aspects of computing security, there are several areas that are already sufficient ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall Internet is becoming more and more popular today, PC security not only requires the prevention of computer viruses, but also to improve the system to resist the hacker's ability to attack the illegal intrusion, and to improve the confidentiality of remote data transmission, to avoid illegal theft in transit.  In this paper, we simply analyze some situations that may occur when constructing Web server, hoping to arouse attention. &nb ...

"Mission Analysis and requirements"  companies need http://www.aliyun.com/zixun/aggregation/12489.html "> mail server, create a mailbox account for each user, users use mail client software to send and receive mail  Mail Exchange Server IP address is 192.168.1.196/28, domain name is test.com, mail server host domain name is mail.test.com only allow local domain name users to send and receive mail  Mail ...

Postfix is the default message transfer agent (MTA) in Ubuntu. It is http://www.aliyun.com/zixun/aggregation/13835.html "> A software in the main software library of Ubuntu. This means that it has a security update. This guide tells you how to install and configure Postfix and set it up as an SMTP server that uses a secure connection. Postfix features: 1. Post ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall WDCP is the Wdlinux Control panel abbreviation, is a set of PHP development Linux Server Management system as well as the virtual host management system,, aims at easy to use the Linux system as our website server, as well as usually to 　　Linux Server Common management operations, can be done in the background of WDCP. 　With WDCP, you can easily create Web sites, create FTP, create MySQL databases, and so on. ...

Intermediary transaction SEO diagnosis Taobao Guest Cloud mainframe technology Hall in fact, when I was a freshman in college, I felt that the Internet would be a part of our generation's life. This part is like television for our parents, newspaper for our grandparents. 　　In the information age, the network undoubtedly plays the most important role. March 18, 2005, the second semester of the university, I purchased the first domain name: [minyao.cn]. Yes, [Minyao] is the Hanyu Pinyin "ballad". Because I like music, also write songs, but ...