> Most likely 8.12.x, in my 8.12.8 its available Thanks. ...and now /me feels silly for not just checking the complete sendmail changelog: http://www.sendmail.org/ftp/RELEASE_NOTES Looks like it showed up in 8.12.0 way back on 2001/09/08. Guess that's what I get for still using redhat 7.2's packages instead of compiling it myself. :-)