Sendmail Configuration M4 is a macro language that can help to configure the sendmail.cf file, using sendmail.mc Sendmail Configuration Open the Virtusertable file, for mapping user virtual domain addresses. Sendmail Configuration The virutusertable configuration helps to define the domain name along with fully qualified domain name. Sendmail Configuration Open a local-host-file. Sendmail Configuration The local-host-file is for multiple hosts using the same mail server. Enter the domain name as given above. Sendmail Configuration Service for the sendmail is restarted Sendmail Configuration Inorder to determine if send mail is identifying your station hostname correctly, use sendmail - d0. Sendmail Configuration The ipop3 protocol enables to receive the messages from mail server. Open the pop3 file . Sendmail Configuration Disable = yes, the pop3 service is disabled then the mails cannot be received. Sendmail Configuration To Enable the ipop3 Disable is changed to no. Sendmail Configuration The xinetd service is restarted. Sendmail Configuration The root user send a mail to the user joe using mail command. Sendmail Configuration The mail sent by the root is received by the user joe as shown above. Sendmail Configuration • Evolution: • Evolution is the primary mail client for redhat. • It is the powerful tool with supports numerous protocol (smtp, pop and imap) • It includes calendar, address book , multiple mail accounts and encryption. • It is supported by both gnome and kde Sendmail Configuration Running evolution in the background. Sendmail Configuration The evolution welcome wizard get opened and click forward to continue. Sendmail Configuration Enter the user name and email address and click forward to continue . Sendmail Configuration The pop option is chosen to receive mails from the mail server and click forward. Sendmail Configuration Specify the server hostname and the username . Sendmail Configuration The time given as 10 will update the mail in every 10 seconds . Sendmail Configuration Select the SMTP protocol to transfer the mail to the mail server and specify a server address. Sendmail Configuration A name is given to represent the mail account. Sendmail Configuration Location is specified in the timezone setting for the sendmail configuration . Sendmail Configuration Evolution process is done by entering the information needed. Sendmail Configuration Tom the user sends a mail by selecting New button . Sendmail Configuration The user tom sends the mail to the user root as shown above . Sendmail Configuration The root user view the mail received from the user tom using the command mail. Sendmail Configuration The user root sends the mail to the user tom as shown above. . Sendmail Configuration The tom views the mail received from the use root as shown above . Sendmail Configuration dig command shows ip address of the specified fully-qualified domain name . Sendmail Configuration The access file is opened to set the restriction for accessing the sendmail server . Sendmail Configuration Except the example.com all others are restricted to access . Certificates for IMAP • Internet mail Access Protocol – It allows a remote server to hold mail for user who can then login into access their mail. – Unlike the POP servers, IMAP servers retain user mail messages. – User can even save their mails on the IMAP mail server. – IMAP also supports the use of shared folder to which several user can access mail on given topic. Certificates for imap To create the imap certificate first remove the file imapd.pem. Certificates for imap The imap certificate can created using the command make imapd.pem. Certificates for imap While creating imap certificate it will prompts for following, just enter the corresponding details. Certificates for imap The imaps protocol enables to receive and save the mails from mail server. Open the imaps3 file. Certificates for imap Setting disable=no will enables imaps services. Certificates for imap The xinetd service is restarted. Certificates for imap The issued certificate information cab be viewed using the command mutt. Certificates for imap Here you can see the certific ate information's.