plesk(qmail) not sending 99% of mails

i can't figure it out
on the plesk forum they are not very helpful

my plesk doesn't send email
maillog is full of this:
PHP Code:
Apr 15 01:40:15 server1 qmail1081986015.759373 statuslocal 0/10 remote 1/20
Apr 15 01
:40:55 server1 qmail1081986055.619336 delivery 306deferralSorry,_I_wasn't_able_to_establish_an_SMTP_connection._(#4.4.1)/
Apr 15 01:40:55 server1 qmail: 1081986055.619444 status: local 0/10 remote 0/20
Apr 15 01:53:58 server1 qmail: 1081986838.618957 starting delivery 307: msg 1409320 to remote [email]s-kerkhoff@home.nl[/email]
Apr 15 01:53:58 server1 qmail: 1081986838.619067 status: local 0/10 remote 1/20
Apr 15 01:53:58 server1 qmail: 1081986838.754293 delivery 307: deferral: Sorry,_I_wasn'
t_able_to_establish_an_SMTP_connection._(#4.4.1)/
Apr 15 01:53:58 server1 qmail1081986838.754354 statuslocal 0/10 remote 0/20
Ap 
after some days it can't send the mail i do get this:
PHP Code:
HiThis is the qmail-send program at server1.sanderkerkhoff.com.
I'm afraid I wasn't able to deliver your message to the following
addresses
.
This is a permanent errorI've given up. Sorry it didn't work out.
>
> <
s-kerkhoff@home.nl>:
SorryI wasn't able to establish an SMTP connection. (#4.4.1)
> I'
m not going to try againthis message has been in the queue too long.
>
> --- 
Below this line is a copy of the message.
>
> Return-
Path: <info@fkreklame.nl>
Received: (qmail 21798 invoked from network); 7 Apr 2004 22:27:07 -0000
Receivedfrom cp302136-a.venra1.lb.home.nl (HELO sanderamd) (82.73.82.89)
>   
by 10.0.0.158 with SMTP7 Apr 2004 22:27:07 -0000 

delivery to domains on the server works, some other not local domains do work also

non working:
PHP Code:
Apr 15 18:34:05 server1 qmail1082046845.808941 starting delivery 388msg 1409248 to remote [email]roelof_ottens.278tdcfklrljfd196mhed@zend.nu[/email]
Apr 15 18:34:05 server1 qmail1082046845.809050 statuslocal 0/10 remote 1/20
Apr 15 18
:34:26 server1 qmail1082046866.349174 delivery 388deferralSorry,_I_couldn't_find_any_host_by_that_name._(#4.1.2)/
Apr 15 18:34:26 server1 qmail: 1082046866.349236 status: local 0/10 remote 0/20
Apr 15 17:12:35 server1 qmail: 1082041955.218926 starting delivery 379: msg 1409313 to remote [email]sandoz@lycos.nl[/email]
Apr 15 17:12:35 server1 qmail: 1082041955.219034 status: local 0/10 remote 1/20
Apr 15 17:12:35 server1 qmail: 1082041955.298454 delivery 379: deferral: Sorry,_I_wasn'
t_able_to_establish_an_SMTP_connection._(#4.4.1)/

working:
PHP Code:

Apr 15 19
:45:07 server1 qmail1082051107.064546 new msg 1409252
Apr 15 19
:45:07 server1 qmail1082051107.064656 info msg 1409252bytes 3757 from <info@fkreklame.nlqp 13212 uid 2020
Apr 15 19
:45:07 server1 qmail1082051107.070997 starting delivery 391msg 1409252 to remote [email]info@desnelleleeuw.nl[/email]
Apr 15 19:45:07 server1 qmail1082051107.071055 statuslocal 0/10 remote 1/20
Apr 15 19
:45:10 server1 qmail1082051110.621764 delivery 391success64.5.32.89_accepted_message./Remote_host_said:_250_OK_id=1BEAvH-000469-EH/
Apr 15 19:45:10 server1 qmail1082051110.621825 statuslocal 0/10 remote 0/20
Apr 15 19
:45:10 server1 qmail1082051110.621848 end msg 1409252 
99% of mails don't get send
mail queue is filled with 750 mails

seem like qmail can't connect to most remote smtp servers? All ports are open(DMZ)
PHP Code:

[root@server1 root]# telnet mail.byh.nl 25
Trying 205.214.86.12...
Connected to mail.byh.nl.
Escape character is '^]'.
220-server.by000.net ESMTP Exim 4.24 #1 Thu, 15 Apr 2004 21:19:05 +0200
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.


[
root@server1 root]# telnet mail.byh.nl 110
Trying 205.214.86.12...
Connected to mail.byh.nl.
Escape character is '^]'.
+
OK POP3 [cppop 9.9at [205.214.86.12

 

 

 

 

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