All,
I've posted ldap2aliases, a VBScript that automatically creates
aliases on an IMail MX corresponding to users on a remote IMail
mailbox server. It's similar in function to scripts that convert IMail
userbases into alias maps for other MTAs, but designed for those using
IMail as a backup or scanning MX, with or without Declude.
The script allows you to reject unknown users _on the MX during the
SMTP envelope_, which is a near-necessity these days. Bounce floods
during dictionary attacks are a real resource burden and exacerbate
the effects of Joe Jobs, as has been well documented.
Thanks to IMail 8.12's use of OpenLDAP, this script will work reliably
over the wide area, making it equally suited to (a) MXs and mailbox
servers on the same subnet and (b) scanning/backup MXs and mailbox
servers operated at different sites, perhaps by different entities.
The script may be easily scheduled using Windows Task Scheduler.
Notes:
- We have found that the use of a true virtual host for
store-and-forward routing, rather than HOSTS file routing, is
preferable (now that this script is available!). Advantages:
multiple DNS MX records are honored for redundancy, multiple
IP-bound hosts may be used with different IMail anti-spam
settings, and more.
- IMail does not usually expose aliases via LDAP, only users.
However, I have provided a companion script, aliases2ldap, which
you run periodically on the mailbox server to ensure that all valid
addresses are available.
System requirements:
- IMail 8.12 w/LDAP
- Incoming and outgoing TCP 389 open as needed
- aliases2ldap.vbs running on mailbox server to ensure alias
propagation.
Support:
- Please post support questions as [OT] to the IMail or Declude
forums to create a public archive.
Download:
http://www.mailmage.com/products/software/freeutils/ldap2aliases/download/release/
http://www.mailmage.com/products/software/freeutils/aliases2ldap/download/release/
--Sandy
------------------------------------
Sanford Whiteman, Chief Technologist
Broadleaf Systems, a division of
Cypress Integrated Systems, Inc.
e-mail: [EMAIL PROTECTED]
SpamAssassin plugs into Declude!
http://www.mailmage.com/products/software/freeutils/SPAMC32/download/release/
Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail Aliases!
http://www.mailmage.com/products/software/freeutils/exchange2aliases/download/release/
http://www.mailmage.com/products/software/freeutils/ldap2aliases/download/release/
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