Our resident sendmail guru has figured out how to handle LISTSERV probe bounces without patching the sendmail binary. Sendmail must be compiled with the "-DMAP_REGEX" option. This has been tested with both sendmail 8.9.3 and sendmail 8.10.2. Appended below are the relevant lines from our listserv.mc file. All of the usual caveats apply. --- begin listserv.mc --- LOCAL_CONFIG Klowner regex -s2 ^(.*)(owner-.+)\*.*\*\*.+$ LOCAL_RULE_0 R$+ < @ $=w . > $: $(lowner $1 $: $1 $) < @ $2 . > --- end listserv.mc --- -- Paul Russell Senior Systems Administrator University of Notre Dame http://www.nd.edu/~prussell