By Peer Hartleben, Peer Heinlein

IMAP (the net Message entry Protocol) permits consumers to entry their e mail on a distant server, even if from the place of work, a distant position, or a mobile phone or different gadget. IMAP is robust and versatile, yet it's additionally complex to establish; it's more challenging to enforce than POP3 and extra error-prone for either buyer and server.

The e-book of IMAP bargains a close creation to IMAP and POP3, the 2 protocols that govern all glossy mail servers and consumers. You'll learn the way the protocols paintings in addition to tips to set up, configure, and keep the 2 preferred open resource mail structures, Courier and Cyrus.

Authors Peer Heinlein and Peer Hartleben have manage countless numbers of mail servers and provide useful tricks approximately troubleshooting mistakes, migration, filesystem tuning, cluster setups, and password protection that can assist you extricate your self from every type of tough events. You'll additionally learn the way to:

Create and use shared folders, digital domain names, and consumer quotas Authenticate person facts with PAM, MySQL, PostgreSQL, and LDAP deal with heavy site visitors with load balancers and proxies Use integrated instruments for server research, upkeep, and maintenance enforce complementary webmail consumers like Squirrelmail and Horde/IMP organize and use the Sieve e mail filter

Thoroughly commented references to the POP and IMAP protocols around out the e-book, making The publication of IMAP a necessary source for even the main skilled process administrators.

Show description

Read or Download The Book of IMAP - Building a Mail Server with Courier and Cyrus PDF

Similar internet books

Download PDF by Douglas W. Hubbard: Pulse: The New Science of Harnessing Internet Buzz to Track

The final word advisor to mining the net for real-time evaluation of tendencies and data

Showing how the web will be a major device for companies and others to degree tendencies in actual time, Pulse describes instruments for cheap and genuine time dimension methodologies companies can commence utilizing instantaneously. This well timed booklet additionally places this rising technological know-how in standpoint and explains how this new size device will profoundly swap selection making in company and government.

exhibits how the web can be utilized as an exceptionally robust dimension software
unearths the way to mine the web to degree and forecast company development
Written via best specialist in enterprise analytics and function management

Pulse finds how the web is evolving right into a instrument for measuring and forecasting tendencies in society, the economic climate, public opinion or even public wellbeing and fitness and defense. it's a completely crucial ebook for each company chief to show a strong, underutilized device to its entire strength.

Download PDF by Peter Loshin: Practical Anonymity: Hiding in Plain Sight Online

For people with valid cause to exploit the net anonymously--diplomats, army and different executive organizations, reporters, political activists, IT pros, legislations enforcement group of workers, political refugees and others--anonymous networking presents a useful software, and plenty of solid purposes that anonymity can serve a crucial goal.

Alison Doyle's Internet Your Way to a New Job: How to Really Find a Job PDF

This is often the 3rd version of this well known ebook. quite a few years in the past, you may add your resume to 1 of the head jobs websites, click on a couple of times to use for a few jobs, and think about your activity seek good underway. at the present time, that may not sufficient. The task marketplace is changing into more and more aggressive. Hiring managers are crushed with purposes and are taking a look at new and other ways to recruit on-line.

Read e-book online Internet of Things, Smart Spaces, and Next Generation PDF

This booklet constitutes the joint refereed complaints of the 12 foreign convention on subsequent new release Teletraffic and Wired/Wireless complex Networking, NEW2AN, and the fifth convention on net of items and clever areas, ruSMART 2012, held in St. Petersburg, Russia, in August 2012. the whole of forty two papers used to be rigorously reviewed and chosen for inclusion during this publication.

Additional info for The Book of IMAP - Building a Mail Server with Courier and Cyrus

Example text

As every user is directed to his or her “own” server, no shared file area is required. This means that no load distribution among different servers is needed if this solution is used. In very large environments, it may make sense to combine IMAP proxies and the load balancing technique: The proxy assigns connections to balancers on the basis of the user ID, and each balancer distributes its share of the connections to multiple IMAP servers. It is then possible to construct separate mail stores if an individual storage system is overloaded.

To do this, mount the data partition with the option ÒÓ Ø Ñ , and/or enter this option in the » Ø » ×Ø . The Linux kernel will no longer change the 57 4 Selecting a Filesystem Ø Ñ when read accesses occur. 2 Access Control Lists For access to an individual file, the Unix filesystem differentiates users into fixed classes: the owner of the file, users belonging to the same group as the file owner, and all other users (other/world). Access control lists (ACLs) have been added to improve flexibility.

If that is the case, the owner of the directory sees the message as read if other users have already accessed it. In contrast, Cyrus saves flags based on users. If a user changes the Ë Ò flag on a message, this will not affect the message status for other users of the same folder. Û The user has write permissions and may set flags and so on. Û does not permit the user to delete emails. The user may add and delete messages. 4 on page 237) or if the messages are moved automatically using filter scripts (see page 240).

Download PDF sample

The Book of IMAP - Building a Mail Server with Courier and Cyrus by Peer Hartleben, Peer Heinlein

by Kenneth

Rated 4.74 of 5 – based on 4 votes