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Clarification of domain disk space
Question asked by Manuel - August 15, 2015 at 4:43 AM
Unanswered
Hello,
I do not know exactly how the "domain disk space" work.
From SmarterMail help guide:
 
Disk Space - The maximum number of megabytes allocated for the domain. By default, the domain is allocated 500 MB of disk space. This disk space limit also includes file storage for users.Note: When this limit is reached, SmarterMail will send a warning to the domain administrator and mailboxes on the domain will not be able to receive new mail.
 
 
Now, the disk space It must be greater than the sum of the size of its mailbox ?
 
 
Tnx
Manuel

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Bruce Barnes Replied
August 15, 2015 at 5:54 PM
The disk space included everything associated with the user's account:
  • all e-mail boxes:
    • in box
    • sent items
    • spam
    • deleted items
    • and all other mailboxes and sub mail boxes.
  • all files stored locally by the user
  • all files attached to the user's e-mail
  • all calendar items
  • all tasks
  • all contacts, including the pictures stored as part of the contact card
So, when calculating the amount of space to allocate to users, it is important to remember to include all aspects of the user's account, and not just the user's e-mail box.
 
It is also important to remember that when a user SENDS an e-mail, and a copy of that message is stored in the user's sent items box, that also counts against the user's account space.
 
Remember, too, that the message size is not based just on the size of the message and the size of the e-mail address(es) to which it is being sent, but also includes the size of the message header.
 
Finally, remember that the attachment of files to an outgoing e-mail does not increase the message size by just the size of the file, but, depending on the type of file, can add another 60 to 75% of the file size to an outgoing message as part of the process of encoding the file into the message.
 
All of these things must be taken into account when establishing the size of a user's mailbox/account in SmarterMail.
 
For the record, ChicagoNetTech now gives our basic users each a 5 gig mailbox.  We also automatically clean out their SPAM and OUTGOING message boxes of anything more than 30 days old.
Bruce Barnes
ChicagoNetTech Inc

Phone: (224) 444-0169

E-Mail and DNS Security Specialist
Network Security Specialist

Customer Service Portal: https://portal.chicagonettech.com
Website: https://www.ChicagoNetTech.com
Security Blog: http://networkbastion.blogspot.com/

Web and E-Mail Hosting, E-Mail Security and Consulting
0
Bruce Barnes Replied
August 17, 2015 at 1:06 PM
To be on the safe side, I would take the number of mailboxes you have, multiply them by the size you want to allocate to the mailboxes, and then add 25% - for domain and system overhead, to the total domain size.
 
This must be sufficient to cover each user's:
 
  • e-mail boxes
    • inbox
    • sent items
    • spam
    • deleted items
    • created sub-boxes
    • SMTP, IMAP and POP mappings from other e-mail services
  • aliases - you will be required to create at least two, per IETF requirements:
    • abuse
    • postmaster
    • ff you are using DMARC, and forward your DMARC reports to DMARCIAN.COM, then you might also want to create an alias for DMARC as well
  • calendar
    • personal calendar
    • shared calendar(s)
  • contacts
  • tasks
  • user's personal and shared files (if they are allowed to store them locally)
  • external storage mappings - to externally attached file stores
  • user's dictionary (some of them can get quite large)
  • user's configuration and backup configuration (system generated and not under your control)
If you will be using the newsletter features, then you will need to allocate space for the mailing list.
 
So, if you have no mailing lists, then adding 25% of the total of the number of users, times the individually allocated space for each user, should provide plenty of space for the users and domain.
 
If you will have a bunch of aliases, one or more newsletter, and also be using the XMPP (chat) feature, 
 
As I previously indicated, for our BASIC accounts, we allocate 5 gigabytes per user.  To prevent problems, the domain size is set to unlimited, protected from growing too large by the individual user limits.
 
For our premium accounts, we set 15 gigabytes per user.  Again, the domain size is set to unlimited.

We also have contracted customers who do not have any size limitations.  These accounts are periodically reviewed to see how much storage space they are using, but, in most cases, these accounts also include Exchange Web Services and message archiving.  The cost of the services for these accounts, and the included storage, is determined by contract negotiations.
 
Remember, we, each of us who provides e-mail services, is now in direct competition with GMAIL, OUTLOOK.COM, YAHOO!, COMCAST and other providers who do not impose artificially small limits and we need to consider that when we set our pricing and our user/domain capacity.
 
As such, the servers on which our SmarterMail installations are built must be engineered, and the storage capacity of those servers, sized accordingly.
Bruce Barnes
ChicagoNetTech Inc

Phone: (224) 444-0169

E-Mail and DNS Security Specialist
Network Security Specialist

Customer Service Portal: https://portal.chicagonettech.com
Website: https://www.ChicagoNetTech.com
Security Blog: http://networkbastion.blogspot.com/

Web and E-Mail Hosting, E-Mail Security and Consulting

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