My smtp was working fine until I rebooted yesterday.(no changes I made, just mysql server stopped working.
service mysqld restart didn't work so rebooted linode )
My settings were:
Port 25
SSL Yes
client windows live mail
though no SSL certificate is installed on my server.

Now, it is giving me below error.
The server does not support a SSL connection.

Subject 'test'
Server Error: 250
Server Response: 250 rblsmtpd.local
Server: 'mail.terabug.com'
Windows Live Mail Error ID: 0x800CCC7D
Protocol: SMTP
Port: 25
Secure(SSL): Yes


if I send without SSL it gives me:
The message could not be sent. The setting for your outgoing email [SMTP] server might need to be configured. To find the server settings for 'someid@yahoo.co.in', please contact your email service provider.

Subject 'test'
Server Error: 451
Server Response: 451 http://www.spamhaus.org/query/bl?ip=my.goes.ip.here
Server: 'mail.terabug.com'
Windows Live Mail Error ID: 0x800CCC79
Protocol: SMTP
Port: 25
Secure(SSL): No


My pop3 incoming is working fine. Please help me. Thank you in advance.

Does anything show up in the server's log? Are you sure your client shouldn't be connecting to port 587 instead?

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/* TODO: need to add signature to posts */

even port 587 is not working
can anyone give me default files for qmail
default var/qmail/supervise/smtp folder
I installed qmail with kloxo
struck since 12 hours, what to do?
cant send a single mail

A few stabs in the dark, and sorry if I'm stating the obvious:

- Have you checked if any of your partitions are full ("df -h")? A full disk would explain both MySQL suddenly stopping working and mail becoming unhappy.

- Have you checked that the IP in question isn't listed on Spamhaus?

- Have you checked if there's a problem with your configured DNS resolvers? Spamhaus RBL lookups depend on working DNS, and broken/flakey DNS can also affect MySQL database connects (for host-based ACL checks).

mysql is working fine now
my ip is in spamhaus and it is dynamic ip from india.

How to fix mail ?
changing
REQUIRE_AUTH=1
SMTPS=0
export SMTPS
values i get different response from server but nothing is able to send mail...