I am running Red Hat Linux 8. I am having some problems configuring sendmail. I am able to send mail properly but not able to receive properly. I can only receive mail if I use the smtp server of my university. I am not able to send mail from yahoo or hotmail directly i.e using a browser. But I am ble to send it using thunderbird in which i configured my university's smtp server. Can anyone suggest me as to what settings i need to change in the config file.