I'm using version 7.24. Recently upgraded. I have a site running on my desktop which is "pushed" to my domain hoster (as the "deployed site" )as I update it. I am now getting (constantly) error messages as per the subject line "Unable to send e-mail. Contact the site administrator if the problem persists" Sometimes, I actually can send mail, sometimes not. Most disturbingly, that message shows when I fill out and send a contact from the deployed site as an anonymous user. Even though I do received the message. -------------------------------------- I have googled this issue and it looks like this issue is tripping up many drupalists. I have installed the smtp authentication module and am still getting the same messages. Sometimes a dozen or more when I do something as admin. In fact, I have problems sending test emails from the smtp auth module. Reports and Logs: Status Report shows no problems. Logs show errors sending mail, but no helpful messages. Systems logs (/private/var/log/mail.log on Mac OSX 10.7) shows something like : "Dec 11 13:46:51 linus postfix/smtpd[4581]: connect from localhost[127.0.0.1] Dec 11 13:46:51 linus postfix/smtpd[4581]: lost connection after RSET from localhost[127.0.0.1] Dec 11 13:46:51 linus postfix/smtpd[4581]: disconnect from localhost[127.0.0.1]" This is very bad for my business site. Any ideas, Please? thanks -- Tim tim at tee jay forty nine dot com or akwebsoft dot com http://www.akwebsoft.com, http://www.tj49.com