• Menus, options, icons, fields, and text boxes on the screen will be bold
(e.g. the List Name field).• Clickable buttons will be bold and within brackets (e.g. the [OK] button).• Clickable links will be bold and underlined (e.g. the Edit link).• Directory names, commands, and examples of editing program files will appear in Courier New font.• Emphasized words or phrases will be underlined.Important: LISTSERV 15.5 requires a version 15.5 LAK!You must obtain and install a LISTSERV version 15.5 product LAK and (for sites with perpetual licensing) an appropriate maintenance LAK, or LISTSERV will not start after the installation/upgrade.In addition, LDAP support is a prerequisite for LISTSERV 15.5. LISTSERV 15.5 is built with LDAP support. This support is an integral part of LISTSERV and requires that an appropriate LDAP implementation be installed on your machine. In some cases (particularly under Linux) the version of LDAP on our development machines may differ from that on your production or test machine. If LDAP is installed on your machine but you get errors indicating that LISTSERV cannot find the LDAP libraries, simply relink 'lsv' to realign the library pointers. In practice this will happen only when the precompiled 'lsv' is used; for sites that require DBMS functionality, the realignment will happen transparently. For information on LISTSERV/LDAP integration, please see the LISTSERV-LDAP Documentation, which is available separately.Because of non-backward-compatible changes made by LISTSERV 15.5 to the format of LISTSERV's SIGNUP files which allow UTF-8 characters to be used in passwords, and the addition of non-reversible subscriber password encryption, L-Soft STRONGLY RECOMMENDS that, prior to upgrading, a full backup be made of your LISTSERV installation.Important: Install your LISTSERV 15.5 product LAK before upgrading! A valid product LAK (License Activation Key) with "REL=15.5" must be installed before upgrading or LISTSERV will not start after the upgrade.If you have not received a LISTSERV 15.5 product LAK, please contact your sales representative or SALES@LSOFT.COM before upgrading!If your product LAK has EXP=NEVER, you will also need to install an appropriate LISTSERV maintenance LAK.To find out if you can upgrade to LISTSERV 15.5 with your current LAKs, please issue a SHOW LICENSE command to LISTSERV and examine the response. It will be similar to this:
License type: Permanent
Expiration date: None - perpetual license
Maintenance until: 26 May 2008, serial number MNT-XYZ-1
Capacity: Unlimited
Version: 15.5
Serial number: XYZ-1
Build date: 27 Nov 2007Your license key will be valid for the 15.5 upgrade if your current product LAK is for version 15.5 or higher, and your maintenance is not expired.Sites running LISTSERV 14.4 or later may use the LAK input tool in the Web Administration interface to apply and check their new LAK before upgrading.The installation kits found on L-Soft's web site can be used either to install a new copy of LISTSERV or to upgrade an existing installation. To download LISTSERV 15.5, simply go to L-Soft's Web site and download an evaluation copy of LISTSERV or LISTSERV Lite, then follow the installation instructions for your operating system. The kits can be found at:• This document does not include upgrade instructions. Please see the installation guide specific to your OS platform for upgrade instructions.VM sites currently at the 1.8e or 14.x level should download ftp://ftp.lsoft.com/listserv/vm/upd155.hex and install it per the "Fixes and Upgrades" section of ftp://ftp.lsoft.com/listserv/vm/00-read.me. VM sites currently at the 1.8d or earlier level must first upgrade to 1.8e (LISTSERV 14) before applying this level set fix.• The unix kit now only requires a single download. You do not need to download a common.tar.Z file as in previous versions, as those files are now included in the single OS-specific installation file.• LISTSERV version 15.5 is available only for operating systems currently supported by L-Soft. When browsing FTP.LSOFT.COM, you may find installation kits for other operating systems, such as Ultrix or SunOS 4.x, but these kits will be based on older versions and/or code bases. L-Soft no longer has development systems for unsupported operating systems and is not in a position to compile LISTSERV 15.5 for these systems.• Because of non-backward-compatible changes made by LISTSERV 15.5 to the format of LISTSERV's SIGNUP files which allow UTF-8 characters to be used in passwords, and the addition of non-reversible subscriber password encryption, L-Soft STRONGLY RECOMMENDS that, prior to upgrading, a full backup be made of your LISTSERV installation.LISTSERV Maestro 3.0 requires LISTSERV with a build date on or after January 12, 2007, due to changes made to LISTSERV since the original 15.0 release to support new Maestro features.