Big Problem

Hi, i am having problem in my mail server. some of the mails are not coming and most of them are coming very late (2 weeks later)

http://www.dnsreport.com/tools/mail.ch?domain=info@dpozitif.net

it says
Trying to connect to all mailservers:

dpozitif.net. - 62.68.208.130 [Could not connect: Could not receive data: Operation timed out.]
[Note that if your mailserver takes over 30 seconds to respond, our test will timeout, even though real mailservers will wait longer]

does anyone have an idea

 

the connection is really good, my other server (with w2003) works great


i've tailed /var/log/exim_mainlog while the E-Mail Test and it says:

2007-05-01 12:16:44 H=(test.DNSreport.com) [66.36.241.109] sender verify defer for <TestedFrom-85.96.182.227@DNSreport.com>: could not connect to mail.dnsreport.com [70.86.133.4]: Connection timed out
2007-05-01 12:16:44 H=(test.DNSreport.com) [66.36.241.109] F=<TestedFrom-85.96.182.227@DNSreport.com> temporarily rejected RCPT <mertcan@dpozitif.com>: Could not complete sender verify callout
2007-05-01 12:16:44 unexpected disconnection while reading SMTP command from (test.DNSreport.com) [66.36.241.109]

 

When i disabled Verify the existence of email senders and Use callouts to verify the existence of email senders the problem is gone =)