A little background before my question... I had been running redhat9.0 since release date. I run a webserver, and mail server on it. I am connecting through road runner cable modem. I originally had a firewall box (running smoothwall) connected directly to the internet, then from there, forward the ports on to my web/mail server box. All of the sudden one day, I think it was after I ran up2date (still using redhat9.0)... Sendmail would NOT accept SMTP login connections at all. I tried from outlook, and from ximian. And my sendmail was setup to authenticate the user. I had both outlook and ximian set up correctly, and used them every day prior to this. define(`confAUTH_OPTIONS', `A p')dnl I also had all my ssl certificates and everything set up correctly, or it wouldn't have worked before for months upon months... I changed nothing in the config files, and it just didn't work one day, and from thence forward, I have had to use IMAP to retrieve mail. When I try for smtp it says this: "did not issue MAIL/EXPN/VRFY/ETRN " Now, I've read and read and read and read everything and done everything to get fix this... To no avail... So, I decided to start fresh... I built a NEW box, to be my mail server, so I have a separate box for http and mail. So, I installed Redhat9.0, and then upgraded it to Fedora (because I could not get anaconda to run for some reason...) Anyway, after installing fedora freshly on this new box, I configured sendmail, and I get the EXACT same problem with smtp. No matter what I do, I cannot authenticate the user to log in, it gives me the same old "did not issue MAIL/EXPN/VRFY/ETRN" crap... Please someone help me out... Thanks! -- Codito, Ergo Sum... I code, therefore I am...