Feizhou a écrit : > >> >> If it is a phpbb bug, is there an easy way to have a fake smtp server, >> so I can catch the bugged phpbb smtp request? (I can setup another smtp >> port in phpbb...) > > smtp-sink is a program that comes with postfix that sends all mails it > receives to Dave Null. You can tell it to log smtp commands to syslog > or display smtp conversations on screen or redirect them to a file. > man smtp-sink for more information. You can also run this on any port > on localhost as you fancy to test out another instance of your current > phpbb. Thanks for your suggestion. I tried smtp-sink on another port and found that phpbb was the cause of the problem. phpbb did several connections to the smtp-sink and sent multiple emails with more than 50000 recipients instead of 3500. When I sorted the smtp-sink output, I could see recipients duplicated multiple times. Conclusion postfix works great! phpbb sucks! Thank you all for your support.