Mail authentication error?

[Hongwei Li]

Hi,

I have a problem in my FC4 system. System info:
kernel: 2.6.16-1.2096_FC4
sendmail: 8.13.6-0.FC4.1
dovecot: 0.99.14-4.fc4

Recently, users say that they cannot use Outlook to send emails out if they
set SSL connection with port 587 for outgoing server and 993 for incoming
server.  Then, I tested a guest account on several computers. The strange
thing is when I test it on my PC and another one, everything works well.
However, when I test it on other 2 computers (all are Win XP pro, with Outlook
2003), I cannot send emails out.  The error message from Outlook is:

Task 'Matt Morp - Sending' reported error (0x800CCC7D) : 'Your outgoing (SMTP)
server does not support SSL-secured connections. If SSL-secured connections
have worked in the past, contact your server administrator or Internet service
provider (ISP).'

The system log shows:

Sep 22 13:27:22 morpheus sendmail[27813]: k8MFRMjY027813: [128.252.85.77] did
not issue MAIL/EXPN/VRFY/ETRN during connection to MSA


All computers are in our campus and in the same subnet.  Also, users didn't
complain before yesterday, but I didn't change the system recently. My
questions are:

1. What does the above message mean?
2. Why the same account can send emails from two PCs, but not from other PCs
when all use Outlook 2003 with the same settings (SSL connection, port 587 for
outgoing, etc.)?

Thanks!

Hongwei Li