MDaemon® Email Server
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      2. MDaemon® Email Server

      MDaemon's Userlist.dat account database file format

      The userlist.dat is used by MDaemon as the local account database. It is formatted in the following format.

      The numbers represent the amount of characters each field takes up in each line.  Do not make changes to the userlist.dat file without backing it up first.

      Domain

      45

      This is the domain the account is part of

      Mailbox

      30

      This is the part left of the ‘@’ sign

      FullName

      30

      This is the account’s first and last name

      MailDir

      90

      This is the path to the directory where the account’s mail is stored

      Password

      20

      This is the account’s password

      AutoDecode

      1

      Set to ‘Y’ if the account is auto extracting attachments

      IsForwarding

      1

      Set to ‘Y’ if the account is forwarding mail

      AccessType

      1

      'Y' - the account can be accessed by both POP and IMAP
      'N' - the account can't be accessed by either POP or IMAP
      'P' - the account can only be accessed using POP
      'I' - the account can only be accessed using IMAP
      'C' - the account is completely disabled and can not be used at all

      AllowChangeViaEmail

      1

      Set to ‘Y’ if the account can change options via email

      KeepForwardedMail

      1

      Set to ‘Y’ if the account is retaining a copy of forwarded mail

      HideFromEveryone

      1

      Set to ‘Y’ if the account is to remain hidden from EVERYONE list
      ProcessCalendarRequests

      1

      Set to ‘Y’ if the account automatically processes meeting and cancellation requests

      ApplyQuotas

      1

      Set to ‘Y’ if the account is subject to quota restrictions

      EnableMultiPOP

      1

      Set to ‘Y’ if the account is actively using MultiPOP

      LocalOnly

      1

      Set to ‘Y’ if account is restricted to sending local  messages only

      MaxMessageCount

      4

      Max number of messages the account can have in the mailbox at once

      MaxDiskSpace

      6

      Max disk space the account is allowed to consume

      CR

      1

      Carriage return character

      LF

      1

      Linefeed character

      Due to the fact that MDaemon stores the passwords in an encrypted state the actual maximum length of a password is 15 characters.  MDaemon needs the remaining space to store the encrypted version of the password since it can be up to 5 characters longer than the unencrypted version.

      It is possible to enter a plain unencrypted textual value into the password field manually and have MDaemon automatically encrypt it for you.  This will aid in third party development of userlist utilities since they will not have to worry about storing the password in an encrypted state.  To use this feature simply enter the textual password into the password field and set the last two characters of the password field (i.e.. positions 214 and 215) to a blank space and a 'Y' character respectively.  When MDaemon reads the userlist file and encounters a password that has the last two characters arranged in this fashion it assumes that the value present in the field is a plain text entry that needs to be encrypted.

      If an account is set to forward mail (i.e.. position 217 = 'Y') then the forwarding address can be found in the FORWARD.DAT file under a section name that is the same as the account’s EMAIL field.

      If encryption is being used (position 222 = 'Y') then only messages which are smaller than or equal to 4096 bytes in length will be encrypted.  Messages larger than this will not be encrypted.