Administrator's Guide - Kerio Software Archive

Chapter 7 DomainsThis way, you can prevent the internet connection from being overloaded with messageswith large attachments (images, clips, music, etc.).If the limit is set to 0, Kerio MailServer behaves the same way as if no limit was set.The message size limit can be also set for individual users separately (see chapter 13.2).The limit set for a particular user has higher priority than the limit set for the domain.Restoring deleted itemsUsing this option, the deleted items (messages, events, contacts, notes and tasks) can bemoved back to the Deleted items folder. Users can also specify how long the items shouldbe preserved so that they can be restored when needed.The settings depend on the number of user mailboxes in Kerio MailServer and free diskspace. However, the time must not exceed one year, i.e. 365 days. If the specified numberis too large, the domain settings cannot be saved.It is recommended to enable this option for all domains that contain user mailboxes,so that the items deleted by mistake (messages, events, contacts or tasks) can be easilyrestored.To restore the items and move them back to Deleted items folder, select Configuration→ Domain settings → User accounts. For information about restoring items for selectedusers, see chapter 13.7.User count limitThis option is useful especially when administration of user accounts via web interface isused (see chapter 31). Users with administration rights cannot break this limit.7.3 AliasesIt is possible to define any number of virtual domains (aliases) for the each email domain.Virtual domains are alternative names (aliases) for a particular domain. Names of the virtualdomains can be specified in the Aliases section. Email addresses within the virtual domains areidentical (delivery is performed to the identical mailboxes). If this option is used, individualuser accounts can belong to multiple domains.Usage of domain aliases will be better understood through the following example:A company uses two domains: company.us and company.com. The company.us domainis was set as a mail domain in Kerio MailServer. Email addresses of the domain users areuser@company.us. If we create the company.com domain alias for the company.us domain, itis also possible to use the user@company.com for identical users. It does not matter, whetherthe user@company.us or the user@company.com is used. In both cases, the mail is deliveredto the same user.Warning: Unless this is a local alias (virtual domain), corresponding MX records must be definedin DNS for each of such domains. A simple definition of the domain as an alias of anotherdomain does not make the alias exist in the Internet.66