I just checked with programmers again about this point. They indicated that port 25 should work because it starts unencrypted but then start-tls invokes up the encryption. If you use 465 it starts with encrypting the channel right away (hence less chance for problems). The documentation should be updated and changed within the hour. /sgt Scott G. Thomas Division Mgr, Computing Services 408A Computer Center Michigan State University 517-355-4500 x142 -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Chris Wolf Sent: Friday, December 19, 2003 11:34 AM To: [log in to unmask] Subject: Re: [MSUNAG] My mail.msu.edu SSL SMTP Port Weirdness At 10:42 AM 12/19/2003, Doug Nelson wrote: >Port 25 is correct for non-SSL, and 465 for SSL. But the "client documentation" pages found at http://help.msu.edu/mail/documentation/ say that, for example, with Outlook Express for Windows, you should choose SSL, but use port 25 (not 465). I use this setting at home and it works fine. Similarly, I've discovered that Eudora for Windows does not actually require the SSL settings indicated in the client documentation page. The Eudora documentation there says to set your SSL settings to "Required, Alternate Port", but for us it also works fine when set to "If Available, STARTTLS". Can anyone explain what's going on here? Is there some other circumstance that we haven't run into where SSL with port 25 in Outlook Express or the "If Available, STARTTLS" setting in Eudora would fail to work? --Chris ============================================== Chris Wolf Computer Service Manager Agricultural Economics [log in to unmask] Michigan State University 517 353-5017