Administrator's Guide - Kerio Software Archive

Administrator's Guide - Kerio Software Archive Administrator's Guide - Kerio Software Archive

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Chapter 7 DomainsFigure 7.4Domain settings — footers7.5 ForwardingUsing the Forwarding tab parameters you can forward messages to another SMTP server automatically.Forwarding can be used especially for:• splitting the domain into more servers (for more information, see chapter 27.4),• creating a backup mailserver (for more information, see chapter 27.5).If the recipient was not found...Messages will be forwarded to another SMTP server if a recipient is not found in thedomain. Messages are forwarded only if the recipient’s address is not an address of anyuser, group or alias included in this domain. If there is no user, group or alias defined inthis domain, all messages will be forwarded (this function is equal to the Forward featurein versions former to Kerio MailServer 5.5).Forward to serverDNS name or IP address of SMTP server to which all email messages for this domain willbe forwarded.PortSMTP server port. The Default button sets the standard 25 port.Online delivery — deliver the messages immediatelyThis option is helpful when it is intended to divide a domain to multiple servers whilea persistent Internet connection is provided (for details, see chapter 27.4).Online delivery follows SMTP delivery settings (Configuration → SMTP server → Queueoptions). For details on this tab, see chapter 15.2.68

7.5 ForwardingFigure 7.5Domain settings — forwardingOffline delivery — delivery is started by schedulerUnder normal circumstances, Kerio MailServer sends email for the Forward domain to thespecified SMTP server immediately. If the server has a dial-up connection to the Internet,then this may cause very often dialing and hanging up of the line (and high costs for theconnection). Enabling this option will allow email for the Forward domains to be queuedand delivered at scheduled times only (see chapter 9).Offline delivery — delivery is triggered by ETRN command from remote hostKerio MailServer keeps all messages addressed to this domain up to the moment whenthe ETRN command with this domain included as a parameter (for details, see chapter15.1) is received before sending them to the defined SMTP server. This way KerioMailServer can be used as a secondary server for a domain whose primary SMTP server isnot permanently connected to the Internet.If the domain...Here you can define whether messages that contain one of domain’s aliases in the recipient’saddress will be forwarded or not. The Don’t forward such messages option disablesloops in case that the particular recipient cannot be found at any server operating withthis domain.Note: If the domain is covered by two servers, set this option on one of them only (fordetailed description of a domain covered by two and more servers, see chapter 27.4).69

7.5 ForwardingFigure 7.5Domain settings — forwardingOffline delivery — delivery is started by schedulerUnder normal circumstances, <strong>Kerio</strong> MailServer sends email for the Forward domain to thespecified SMTP server immediately. If the server has a dial-up connection to the Internet,then this may cause very often dialing and hanging up of the line (and high costs for theconnection). Enabling this option will allow email for the Forward domains to be queuedand delivered at scheduled times only (see chapter 9).Offline delivery — delivery is triggered by ETRN command from remote host<strong>Kerio</strong> MailServer keeps all messages addressed to this domain up to the moment whenthe ETRN command with this domain included as a parameter (for details, see chapter15.1) is received before sending them to the defined SMTP server. This way <strong>Kerio</strong>MailServer can be used as a secondary server for a domain whose primary SMTP server isnot permanently connected to the Internet.If the domain...Here you can define whether messages that contain one of domain’s aliases in the recipient’saddress will be forwarded or not. The Don’t forward such messages option disablesloops in case that the particular recipient cannot be found at any server operating withthis domain.Note: If the domain is covered by two servers, set this option on one of them only (fordetailed description of a domain covered by two and more servers, see chapter 27.4).69

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