Setting Up Mail Server Clustering with Xsan | Apple 10.6 specification

Setting Up Mail Server Clustering with Xsan

With Xsan, you can cluster multple mail servers that share the mail store. This provides mission-critical redundancy and high performance and allows you to easily maintain the pooled storage using Xsan tools and software.

Each server also has a primary SMTP spool file. If a server goes offline, another node in the cluster takes over processing of the failed sever’s spool file. This happens automatically, but you will see it noted in log files.

You can configure your mail server to join an existing mail cluster as a new member of the cluster, or you can migrate a mail server’s mail store to another server that is a member of the cluster.

If Xsan software is installed, you can also create a cluster, with the current server becoming the cluster’s first member.

Configuring Mail Clustering

1In Server Admin, select a computer in the Servers list, then select Mail.

2Click Advanced.

3Click Clustering.

4Click the Change button, then follow the onscreen instructions that appear.

Note: After a server has joined a cluster, changes to mail server settings, such as SMTP,

POP, IMAP, and logging, will affect all servers in the cluster.

When you remove the last member of a cluster, you must designate a server to take over as a standard mail server.

Configuring Additional Mail Service Support for 8-Bit MIME

By default, many mail systems that use 8-bit character encoding for text (like Asian language mail systems) convert from 8-bit MIME to 7-bit characters. This has the unfortunate effect of garbling the mail.

To receive 8-bit character-encoded mail messages, disable the default conversion that Postfix performs. Use the postconf command-line tool to disable the setting.

To disable the default conversion:

1Log in to your server as the administrator.

2In Terminal, enter the following command:

sudo postconf -e disable_mime_output_conversion=yes

This disables the special processing of Content-Type headers while delivering mail.

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Chapter 3    Mail Service Advanced Configuration

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Apple 10.6 manual Setting Up Mail Server Clustering with Xsan, Configuring Additional Mail Service Support for 8-Bit Mime

Contents

Mac OS X Server Apple Contents Mail Service Advanced Configuration Monitoring and Maintaining Mail Service Troubleshooting Mail Service Contents What’s in This Guide Preface To get the most recent onscreen help for Mac OS X Server Using Onscreen HelpTo see the most recent server help topics Document Road Map Getting Started Preface About This Guide Getting Documentation Updates Getting Additional Information Understanding Mail Service Mail Service Architecture Mail Transfer Agent Mac OS X Server Mail Screening Outgoing Mail Location Where Mail Is StoredIncoming Mail Location Local Delivery Agent Internet Message Access Protocol ImapDovecot User Interaction with Mail Service Post Office Protocol POP Mailman-Based Mailing Lists Using Mailing Lists with Mail ServiceWiki-Based Mailing Lists Using Network Services with Mail Service Mail service uses DNS like this Managing Mail Service Before You Begin Configuring DNS for Mail Service Using Mail Service ToolsTo enable MX records Setup Overview How User Account Settings Affect Mail Service To start the mail configuration assistant Configure outgoing Mail service Configure additional settings for Mail service To enable Mail Service for administration Administering Mail ServiceChanging Mail Service Settings To change Mail service settings from the command line Configuring Outgoing Mail Service General SetupViewing Mail Service Settings from the Command Line Understanding Smtp Authentication To enable Smtp access Enabling Smtp AccessRequiring Smtp Authentication Copying Undeliverable Incoming Mail Relaying Smtp Mail Through Another ServerTo relay Smtp mail through another server To keep a copy of undeliverable incoming mail Saving Mail Messages for Monitoring and Archival Purposes Configuring Incoming Mail ServiceEnabling Imap Access To save all messages To enable POP access To enable Imap accessEnabling POP Access Choosing No Incoming Mail Retrieval To change the local delivery directory Restricting Smtp RelayTo restrict Smtp relay Restricted Smtp Relay and Smtp Authentication Interaction Rejecting Smtp Connections from Specific Servers To reject mail from blacklisted senders Rejecting Mail from Blacklisted SendersFiltering Smtp Connections To filter Smtp connections Limiting Junk Mail and Viruses Connection Control To enable junk mail screening Mail Service FilteringEnabling Junk Mail Screening Bayesian Filters Training the Junk Mail Filter Training the junk mail filter with users’ help Filtering Mail by Language and Locale Training the junk mail filter without user interactionTo allow mail by language and locale To enable virus screening Enabling Virus Screening From the command line To enable Sieve supportServer-Side Mail Rules Limiting Incoming Message Size To enable a user’s mail quotaManaging Mail Quotas Enabling Mail Quotas for Users To configure quota warnings Configuring Quota WarningsConfigure Quota Violation Responses To configure quota violation responses To enable wiki-based mailing lists Setting Up a Wiki-Based Mailing ListMailing Lists About Mailman To enable mailing lists Setting Up a Mailman Mailing ListEnabling Mailing Lists Creating a Mailing List To create a list Creating a Mailing List Description Setting a List’s Maximum Message LengthTo set a list’s maximum message length To create a list description Customizing the Mailing List Unsubscribe Message Customizing the Mailing List Welcome MessageTo customize a welcome message To customize the subscriber welcome message Enabling a Mailing List Moderator To enable list moderationSetting Mailing List Message Bounce Options To set bounce options Adding Subscribers Designating a Mailing List as PrivateTo set privacy options To add subscribers To see the lists Administering Mailing ListsViewing a Server’s Mailing Lists Viewing a Mailing List’s Information Accessing Web-Based Administrator Options Designating a List AdministratorTo designate a list administrator To access a list’s web-based options Archiving a List’s Mail Designating a List ModeratorTo designate a list moderator To archive a list’s mail Adding a Subscriber to a List Working with Mailing List SubscribersViewing Mailing List Archives Removing a List Subscriber Suspending a Subscriber Changing Subscriber Posting PrivilegesTo add or remove a subscriber’s posting privileges To suspend a user’s subscription to a list To subscribe via mail List Subscriber OptionsSubscribing to a Mailing List Via Mail Subscribing to a Mailing List Via Web Unsubscribing from a Mailing List Via Mail Setting and Changing Your Mailing List PasswordUnsubscribing from a Mailing List Via Web Disabling List Mail Delivery To disable list deliveryChanging Digest Mode To toggle digest mode To access additional options Where to Find More InformationSetting Additional Subscriber Options Choosing Mime or Plain Text Digests Archiving Mail Service Logs by Schedule Setting Mail Service Logging OptionsSetting the Mail Service Log Detail To set the Mail service log detail Client-Specific Configuration for Mail Service Configuring Mail Client Applications To use WebMail Using WebmailVacation Notices How a user modifies their vacation notices Securing User Access to Mail Service Use this chapter to tune Mail service beyond a basic setupDesignating Authorized Mail Service Users Using Access Control Lists for Mail Service Access Using Workgroup Manager for Mail Service AccessTo enable a user’s mail access using Workgroup Manager Smtp Authentication Choosing Authentication for Mail ServiceTo enable mail access using ACLs To allow secure Smtp authentication Imap and POP AuthenticationTo allow less secure authentication To set secure Imap and POP authentication To set less secure Imap and POP authentication Securing Mail Service with SSL Configuring SSL for mail transport To configure SSL transport for Smtp connections Configuring SSL Transport for Smtp ConnectionsConfiguring SSL Transport for Imap and POP Connections To configure SSL transport for Imap and POP connections Generate a Certificate Signing Request CSR Enter a key size, and then press Return Enter s, and then press Return Following output appears Accessing Server Certificates from the Command Line Creating a Password File from the Command Line Creating the Password File in the Keychain To enable virtual hosting Mail Service Virtual HostEnabling Virtual Hosting Associating Users to the Virtual Host Adding or Removing Virtual HostsTo add or remove virtual hosts Postmaster@server.com At the prompt, enter the following command Creating Additional Mail Addresses for Users To create a Mac OS X Server-style alias To create a Postfix-style alias Setting Up Forwarding Mail Addresses for a UserTo forward a user’s mail Viewing the Location of the Mail Store Working with Mail Service Data StorageTo specify where mail is stored on the server Specifying the Location of the Mail Store Creating Additional Mail Store Locations To split the mail store Maximum Number of Mail Messages Per Volume Backing Up and Restoring Mail Messages Configuring Mail Clustering Setting Up Mail Server Clustering with XsanConfiguring Additional Mail Service Support for 8-Bit Mime To disable the default conversion Starting or Stopping Mail Service Use this chapter to monitor and maintain Mail serviceTo start or stop the service Holding Outbound Mail Reloading Mail ServiceTo reload Mail service from the command line To hold outbound mail To create a mail administrator account Allowing Administrator Access to Mail FoldersCreating an Administration Account Blocking Inbound Mail Connections Viewing Mail Service Logs Monitoring Mail Service ActivityViewing an Overview of Mail Service Activity To see an overview of Mail service activity Viewing the Mail Connections List To view a Mail service logReclaiming Disk Space Used by Mail Service Log Archives To view a list of connected mail users Checking the Outgoing Mail Queue Viewing Mail AccountsMonitoring the Outgoing Mail Queue Clearing Messages from the Outgoing Mail Queue Retrying Undelivered Outgoing Messages Viewing Mail Service StatisticsTo try to resend an outgoing message Computer responds with the following output Troubleshooting Mail Service Improving Performance Where to Find More Information When a Disk Is FullWhen Mail Is Undeliverable Forwarding Undeliverable Incoming Mail Books Internet Service Settings Appendix D87.cert.pem Mailimapsieveproxyservers Emptyarray D87.key.pem Default ALL+RC4@STRENGTH 100 101 Mailpostfixsendercanonicalmaps 102 Strength 103 ALL!EXPORT+RC4@STRENGTH 104 105 Mailpostfixdisablemimeinput Processing 106 Begin Certificate 107 108 109 110 111 Options 112 Connect GET Post 113 114 115 116 117 118 119 120 TZ Mailconfig Lang 121 122 Begin RSA Private KEY 123 MAILER-DAEMON 124 Ratedelay Mailpostfixsmtprandomize Yes Addresses 125 126 127 Vacation Notification Script 128 Basic Sort and Antijunk Mail Filter Self-Defined Forwarding129 130 Disks Index131 132 See also Mailman, subscribers Mailman 133 134