one problem about sending email

Hello, Hope that you could give me some instructions and advice. Thank you very much! Problem: I run postfix on sysbio.rnet.missouri.edu (Red hat 4.1.2-50). I create a mailing list named multicom_tool...@sysbio.rnet.missouri.edu. After subscribing to this list, I receive the confirmed and wel

cannot send a message

Hello, Hope that you could give me some instructions and advice. Thank you very much! Problem: I run postfix on sysbio.rnet.missouri.edu (Red hat 4.1.2-50). I create a mailing list named multicom_tool...@sysbio.rnet.missouri.edu. After subscribing to this list, I receive the confirmed and welc

about postfix reload

Hello, After changing the file "main.cf", do I need to run "postfix reload" ? Or should I run "/etc/rc.d/init.d/postfix restart" ? Thank you very much!

cannot send a message

Hello, I installed postfix-2.3.3-2.1.e15_2 on Red hat 4.1.2-50. I 'd like to integrate postfix and Mailman 2.1.13. When I send an email, nothing happens. There are not any wrong information in apache error log. In the file maillog, there are a few lines: Jun 19 15:53:51 sysbio postfix/smtpd[9