Are there any known Windows service pack issues with LISTSERV and/or LSMTP?
We are not aware of any issues with the current Windows service packs. For older versions of Windows (no longer supported by L-Soft), it is our recommendation that you apply at least SP6 for Windows NT 4.0 as it contains fixes to things like Year 2000 issues and the TCP/IP stack which have the potential to affect the operation of our products if you do not apply them. You may also want to apply certain of the available “hot fixes”, for instance the one that prevents SYN attacks, at your discretion. We also recommend applying Service Pack 4 for Windows 2000. However, please note that L-Soft no longer supports LISTSERV under Windows NT 4.0 or earlier.