Problem with qmail, mail aren't send and stay in queue mail

[lolpop]

Hi,

Since 2-3 days, email aren't send and stay in queue mail.

The log say for all email :

May  9 11:21:15 vps23776 send: delivery 2: deferral: Sorry,_I_wasn't_able_to_establish_an_SMTP_connection._(#4.4.1)/

I don't change anything on the server.

Do you have some ideas?

Thanks a lot.

[MRatWork]

Using Kloxo-MR 6.5 or 7.0?.

[lolpop]

Thanks to take the time to ask to me :

A. Kloxo-MR: 6.5.0.f-2015040701

B. OS: CentOS release 6.6 (Final) x86_64

C. Apps:
   1. MySQL: mysql55-5.5.43-1.ius.el6.x86_64
   2. PHP: php53u-5.3.29-1.ius.el6.x86_64
   3. Httpd: httpd-2.2.29-2.mr.el6.x86_64
   4. Lighttpd: --uninstalled--
   5. Nginx: --uninstalled--
   6. Qmail: qmail-toaster-1.03-1.3.55.mr.el6.x86_64
      - with: courier-imap-toaster-4.1.2-1.3.18.mr.el6.x86_64
   7. Dns: bind-9.9.5-1.el6.x86_64

D. Php-type (for Httpd/proxy): mod_php_ruid2

E. Memory:
                total       used       free     shared    buffers     cached
   Mem:          1024        866        157          6          0        659
   -/+ buffers/cache:        207        816
   Swap:          128         56         71

I try to install kloxomr7 but same problem.

[MRatWork]

This issue related to qmail-toaster itself where possible wrong create ssl certificate files. I try investigate this issue.

[lolpop]

I don't know if it's usefull but when i test this, i have an time out error :

'telnet gmail.com 25'

[MRatWork]

I don't know if it's usefull but when i test this, i have an time out error :

'telnet gmail.com 25'

Try 'telnet smtp.gmail.com 25'.

[lolpop]

hi,

problem solved for me, it's my vps provider that's block por 25.

thanks a lot for your help.