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1.2. Akregator 1.2. Akregator Akregator is a feed reader or aggregator which can check on RSS-enabled web sites for the latest headlines or articles. RSS is typically used on blogs, personal web sites but also on major media sites such as those from the BBC and Reuters. Figure 8.9. Akregator’s Interface 4 Find a syndicated site and save the feed’s URL by right-clicking on it. Then right- click on the All Feeds folder at the top of Akregator’s tree structure. Paste the URL by clicking on your middle mouse button in the Feed URL field and click OK. A site which offers RSS feeds.

1.1. KMail Figure 8.7. Encryption Key Approval Dialog Finally enter your GPG passphrase. Figure 8.8. Passphrase Dialog When you receive encrypted mail, you are prompted for your passphrase: simply type it in the dialog box which pops up.

1.1. KMail OpenPGP encryption key fields and select your key (see Figure 8.6, Using OpenPGP within KMail [76]), then OK. Figure 8.6. Using OpenPGP within KMail Two new icons are now displayed when you open a new composition window: Allows you to electronically sign your e-mail, which proves without a doubt that the e-mail comes from you. Permits you to encrypt a message for a specific recipient. Note however that the recipient must have shared his public key with you. Once you’re finished writing your e-mail, click on the relevant icon (sign, encrypt or both) then click on . A dialog box appears and you are asked to confirm your key and the recipient’s:

1.1. KMail 1.1.5. Cryptography Using a PGP Key KMail allows you to use cryptography in order to encrypt and sign your e-mails, ensuring that your communications are not tampered with. The easiest way to use encryption with KMail is if you already have a PGP key. If you don’t here’s how to proceed: 1. Open a terminal window (System+Terminals . Konsole ). 2. Type gpg –gen-key. 3. You are asked for what type of key you want: choose DSA and ElGamal. 4. Choose a key size: 2048 bits is the default, and is enough for today’s needs; 4096 bits is probably extreme. 5. You can select an expiration date: 0 is for no expiration date. 6. Enter your user identification which contains your Real Name, then E-mail Address and finally an optional Comment. 7. Enter a passphrase which should be composed of upper- and lowercase letters, numbers and symbols: you need to enter it twice. 8. GPG now generates your key. Move your mouse around, surf the web, play music since it needs a lot of random data. 9. Finally to make sure everything works, type gpg –list-keys. You should get something similar to this as a result: [peter@community peter]$ gpg –list-keys pub 1024D/95DBB95A 2005-03-15 Your Name (Comment) sub 1024g/47FBB9BA 2005-03-15 For more information about generating a GPG key, please refer to the gpg(1) man page or to this excellent tutorial [http://linsec.ca/bin/view/Main/GnuPG]. Go in the Manage Identities window (Settings ..Configure KMail ) and click on Cryptography: click on the Change buttons for the OpenPGP signing key and

1.1. KMail BCC (Blind Carbon Copy): these recipients are also secondary but are hidden from the other recipients of this message. No recipients of the message will have access to the other mail addresses to which this message was sent. The following table shows the buttons which are mostly used in the message- composition window, their equivalent keyboard shortcuts and a brief explanation of the functions they provide. Table 8.2. Message-Composition Toolbar Buttons Function Keyboard Shortcut Button Sends the message immediately (your network connection must be active). A copy of the message will be kept in the sent-mail folder. Ctrl -Enter Queue the message. The message will be saved in the outbox folder and will be sent the next time you request mail to be sent ( File ..Send Queued Messages ). Attach a file to the message. This function is also accessible through the Attach ..Attach File menu. A standard file dialog will pop up. Select the file you want to attach and click on Attach . Repeat for multiple files. 1.1.4. Folders and Filters The filter tool is located in the Settings ..Configure Filters menu and can automatically sort mail into different folders according to specified criteria (sender, subject, date, etc.) using filters. Let’s assume you want to filter incoming messages according to the sender and you have at least one message from that sender in your inbox folder. You want all incoming e-mail from someuser@somecompany.net to go directly into the SomeUser folder. The first step is to create a new folder to store the messages. So access the Folder . New Folder menu and give your new folder a meaningful name, select the mbox mailbox format and click on OK to create the folder. To create the filter select one of the sender’s messages and right click on it. From the contextual menu, select Create Filter ..Filter on From , select the destination folder (Filter Actions) and accept that rule by clicking on Apply and OK .

1.1. KMail 1.1.3. Composing a Message Figure 8.5. The Message-Compose Window Toolbar. This is where the main composition buttons reside. See Table 8.2, Message-Composition Toolbar Buttons [74] Message Body. The area where you will type the content of your message. Message Recipients. The list of all recipients of this message. By default, the following options are shown: To: the principal intended recipient of this message. CC (Carbon Copy): not-hidden secondary intended recipient(s) of this message. All recipients will have access to the mail addresses to which this message is sent.

1.1. KMail Folders List. Where all folders are listed. The default folders are inbox(incoming messages), outbox (unsent templates), sent-mail (already sent messages), trash (deleted messages) and drafts (draft messages). Kontact Buttons. On the left of the interface are buttons to access Kontact’s components such as RSS Feeds (see Section 1.2, Akregator [78]). The following table shows the most important buttons available in KMail’s toolbar, their equivalent keyboard shortcuts and a brief explanation of the functions they provide. Table 8.1. KMail’s Toolbar Buttons Function K e y - board Short- cut Button Compose a New Message. Ctrl-N Get new messages for all defined e-mail accounts. Keep this button pressed to display a list of all defined accounts; select the one you want to get mail from in order to retrieve messages only for that account. Ctrl -L Reply to the author of the selected message. A message-compose window pops up with some fields already set. R Forward (send to a third party) the selected message. F Delete the selected messages. Deleted messages are moved to the Trash folder. You can recover messages moved to the trash folder, but deletion from the Trash folder cannot be undone: be careful! Del Some of those buttons have a little black arrow at the bottom right corner. An additional menu with related actions can be displayed by pressing the mouse button a little longer.

1.1. KMail For security reasons, the outgoing mail server you use may need authentication. If this is the case, check the Server requires authentication box and complete the login and password provided by your ISP or network administrator. 1.1.2. KMail’s Interface Figure 8.4. KMail Client Interface Toolbar. Where the main action buttons lie. See Table 8.1, KMail’s Toolbar Buttons [72]. Messages List. Where information (subject, date, sender, etc.) about messages stored in the currently selected folder is displayed. Message View Pane. Where the currently selected message’s contents are displayed.

1.1. KMail each time you want to retrieve messages (see Figure 8.2, Configuring a POP3 Mail 3 Account [69]). If you use many computers to access your e-mail with a POP3 account, you should check the Leave fetched messages on the server option which allows you to access the messages you already downloaded from another computer. Click on OK to add the account. If you have a permanent network connection (such as DSL or cable-modem) activate the Enable interval mail checking option which tells KMail to fetch messages periodically. Figure 8.3. Setting the Outgoing Mail Server In the Sending tab click on Add , and select SMTP as the transport type. Fill the Name field with a meaningful name for this server and the Host field with the SMTP server’s name or IP address (see Figure 8.3, Setting the Outgoing Mail Server [70]). However please understand that this means anyone can actually access your e-mails if they are using your user account.

1.1. KMail Use the Cryptography, Advanced and Signature tabs to set up other parameters such as different Reply-To addresses, a GPG key to send messages securely, and so on. Click on OK and Apply to define your default identity. Now configure the mail servers in the Accounts section. Click on Add in the Re 2 ceiving tab, select POP3 as the account type. Figure 8.2. Configuring a POP3 Mail Account Complete the Name field with a meaningful one for this account and the Host field with your POP3 server’s name or IP address. Type in the e-mail user name and password which your ISP provided you with in the Login and Password fields. Check the Store POP Password option to avoid having to type your password We use POP3 in our example since most ISPs provide POP3 accounts to retrieve mail. If you have another account type, such as an IMAP (Internet Mail Access Protocol) one, the configuration differs slightly.