Hello, When trying to add a patron, i get an error screen which reads like... can't find an executable sendmail at /usr/share/koha/lib/C4/Letters.pm line 21 and so on. i was assuming i'd just use postfix in place of sendmail, but it looks like this module needs sendmail and only sendmail. Is that right? The error disappears when i install sendmail. i wanted to think twice before installing sendmail on my internet server, because of its known vulnerabilities. Some more information: this error appears irrespective of whether i have "AutoEmailOpacUser" preference turned on.. Thanks and regards, krishnan mani Pune, India Unlimited freedom, unlimited storage. Get it now, on http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html/