Hash Mail

& 1.1 Introduction Mail Service is the most important network service that users need. Web traffic is large, but messages are primarily used for communication between individuals, and human-human communication is the basis of business. A network without http://www.aliyun.com/zixun/aggregation/12489.html "> mail services is an incomplete network. In other words, if the user is not provided with full TCP/IP mail support, such a network operating system is not trustworthy. To match with ...

1 Introduction e-mail plays an important role in people's work. According to statistics, the average Chinese per user receives 4.4 mails a week, sends 3.6 emails. But the primary protocol for e-mail, such as SMTP, is delivered in plaintext. This information may be obtained by a third party when it passes through an untrusted internet. In a modern society that attaches importance to information security, it clearly meets the requirements. How can this information be kept confidential without tampering or forgery? The PGP (Pretty-Privacy) described in this article is a kind of software, which is mainly used for electric ...

In the modern information society, when the email is popular, the security problem is also very prominent. In fact, the process of e-mail transmission is the process of repeated replication on the network, the network transmission path is uncertain, it is easy to be unknown identity of the theft, tampering, and even malicious destruction, to send and receive both sides trouble. Information encryption to ensure the security of the transmission of e-mail has become an urgent demand for the vast number of e-mail users. The appearance and application of PGP solves the problem of secure transmission of e-mail well. Combining the traditional symmetric encryption with the public key method, we have two ...

Ezmlm_hash (PHP3 CVS only, PHP4 CVS only) ezmlm_hash---&http://www.aliyun.com/zixun/aggregation/37954.html "> nbsp; Compute hash value syntax: int ezmlm_hash (string addr) Description: Ezmlm_hash () compute hash value, MySQL ...

Evolution is more than just an e-mail program. It provides all the standard e-mail client features, including powerful mailbox management, user-defined filters, and fast searching. In addition, it has a flexible calendar (scheduler) feature that allows users to create and confirm group meetings and special events online. 　　 Evolution is a full-featured personal and workgroup information management tool for Linux and unix-based systems, and it is the default e-mail client for the GNOME desktop. You can...

OpenStack Object Storage (Swift) is one of the subprojects of the OpenStack Open source Cloud project, known as Object storage, which provides powerful extensibility, redundancy, and durability. This article will describe swift in terms of architecture, principles, and practices. Swift is not a file system or a real-time data storage system, which is called object storage and is used for long-term storage of permanent types of static data that can be retrieved, adjusted, and updated as necessary. Examples of data types that are best suited for storage are virtual machine mirroring, picture saving ...

Design of Enterprise Cyber ​​Security Solution. With the rapid development of information technology, many far-sighted enterprises have realized that relying on advanced IT technologies to build their own business and operation platforms will greatly enhance their core competitiveness so that they can stand out in a harsh competitive environment. The dependence of management on computer application system is enhanced, and the dependence of computer application system on the network is enhanced. The scale of computer networks is constantly expanding, and the network structure is increasingly complicated. The normal operation of computer network and computer application system puts forward higher requirements on network security. Information security should be considered as a whole, ...

It is important to understand how postfix implements mappings. The core of our system is the postfix mapping, where we discuss this issue and don't skip this part. The usual literal meaning of a mapping is to establish a relationship between two values. We must map the Mail user account or email address in postfix. For example, the local alias used by Postfix and the Local System user mapping file:/etc/aliases, shows the mapping structure: postmaster:root This mapping structure causes all to send to p ...

I. Preface: With the vigorous development of the Internet network, the application of various networks continue to be new, in our daily life, whether it is a routine or office business, the network for you and I, is already an indispensable part of life! There are many times when we need to use the help of the Internet to disseminate messages or to get the information we want through the Internet. The network is so convenient and easy to use, but have you ever worried: if it is important and extremely confidential information, in the vast network of the sea, how to ensure the security and confidentiality of information? Yes, information security is a very important subject. Internet ...

Qmail-scanner (also known as Scan4virus) is an auxiliary tool for scanning qmailhttp://www.aliyun.com/zixun/aggregation/12489.html "> The contents of all gateway e-mail messages for the mail server. It is typically used for anti-virus protection, and is typically used in conjunction with commercial virus scans. It can also be used as an archiving tool for auditing or backup. Qmail-scanner integrated more than some of its ...