Insufficient data. If the error appears in response to traffic originating directly from LISTSERV(tm) entering the queue, then you have something rather strange going on. If the error appears in response to traffic being delivered to a remote site, then you may be able to solve the issue by creating a custom destination profile and setting the max recipients parameter to a very low number for that remote site. This is done most easily through the WinLSCP control interface - configure, SMTP Destinations. Changing this option should not have noticeable effect on your system performance. We use LSMTP(tm) not the lite version, so I can't say exactly for sure just how this may work in your configuration. As a matter of my personal preference, I set max recipients per message to 1 for every destination, with a few rare exceptions - it makes problem-solving simpler. I recommend leaving MAXBSMTP as it is. The error you list is generally due to a particular message having "more than X recipients" for the target domain, where X is determined individually by each mail system, and may change from time to time. If you have the LSMTP max recipients value smaller than X then you don't see that error. You might want to have a look at your subscriber list to identify the domains where you have larger collections of subscribers. >>> [log in to unmask] 1/18/2006 2:54:26 PM >>> My Listserv SMTP log is showing the following error for one of my lists with 169 subscribers 552 5.5.3 Too many recipients Listserv is set with MAXBSMTP at 1000 Should I change the setting (what would be optimal), or is there another solution? LISTSERV 14.4 LSMTP-Lite ------------ Regards, Randy Klumph [log in to unmask] Teaching Research Institute Western Oregon University 345 N Monmouth Ave Monmouth, OR 97361 http://www.tr.wou.edu