Is there some setting within postfix (as configured with Debian 3.1 The perfect Setup) that limits the amount of recipients in an outgoing mail? I run a bulletin board and when I send out a mass email (to about 100 users) I get a php error within PHPbb (bulletin board software). I have consulted PHPbb for the answer to the php error and they indicate that it must be a max limit in the mailserver. Sending out mail to smaller groups or individual users works just fine. I did some research on postfix.org and found that I could over-ride the default limit of 50 by adding the following line to /etc/postfix/main.cf: Code: smtp_destination_recipient_limit = i.e. 250 It did not work after reloading and restarting postfix... Does this spark any ideas with anyone?