Problem in Postfix server/is my server got some attack


 
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Operating Systems Linux Ubuntu Problem in Postfix server/is my server got some attack
# 1  
Old 07-09-2013
Hammer & Screwdriver Problem in Postfix server/is my server got some attack

Hi Friends,
This is logs of my mail log:

Code:
mail for yahoo.com.tw is using up 4001 of 6992 active queue entries : 1 Time(s)
     mail for yahoo.com.tw is using up 4001 of 7018 active queue entries : 1 Time(s)
     mail for yahoo.com.tw is using up 4001 of 7072 active queue entries : 1 Time(s)
     please avoid flushing the whole queue when you have : 75 Time(s)
     so that Postfix quickly skips unavailable hosts : 7 Time(s)
     so that Postfix wastes less time on undeliverable mail : 7 Time(s)
     this may slow down other mail deliveries : 21 Time(s)
     to turn off these warnings specify: qmgr_clog_warn_time = 0 : 75 Time(s)
     you may need a separate master.cf transport for yahoo.com.tw : 67 Time(s)
     you may need to increase the main.cf minimal_backoff_time and maximal_backoff_time : 7 Time(s)
     you may need to increase the main.cf spamfilter_destination_concurrency_limit from 20 : 1 Time(s)
     you may need to increase the master.cf spamfilter process limit : 7 Time(s)
     you may need to reduce spamfilter connect and helo timeouts : 7 Time(s)

My mails queues are filled with some unknown mails :

Code:
 qshape
                                         T  5 10 20 40 80 160 320 640 1280 1280+
                               TOTAL 33678  0  0  0  0  0   0   0   0    0 33678
                        yahoo.com.tw 33501  0  0  0  0  0   0   0   0    0 33501
                            kimo.com   170  0  0  0  0  0   0   0   0    0   170
                           ymail.com     3  0  0  0  0  0   0   0   0    0     3
                        yahoo.com.hk     2  0  0  0  0  0   0   0   0    0     2
                      rocketmail.com     1  0  0  0  0  0   0   0   0    0     1
            allthebestintentions.com     1  0  0  0  0  0   0   0   0    0     1

Its generating huge delay in my mail box Smilie seems dead

Please instruct me for solution Smilie
How can i add spam filters/configure some security features in postfix configuration..

Thanks All Smilie

Moderator's Comments:
Mod Comment Use code tags please, see PM.

Last edited by zaxxon; 07-29-2013 at 08:37 AM.. Reason: code tags
# 2  
Old 07-29-2013
This User Gave Thanks to csorhand For This Post:
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