Problem in Postfix server/is my server got some attack


Login or Register for Dates, Times and to Reply

 
Thread Tools Search this Thread
Operating Systems Linux Ubuntu Problem in Postfix server/is my server got some attack
# 1  
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 09:37 AM.. Reason: code tags
# 2  
This User Gave Thanks to csorhand For This Post:
Login or Register for Dates, Times and to Reply

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #619
Difficulty: Medium
In Python, variables may not be used by just assigning them a value. Declaration and data type definition is required in Python.
True or False?

9 More Discussions You Might Find Interesting

1. What is on Your Mind?

Revive Ad Server MySQL Injection Attack

No rest for the weary, a Revive Ad Server I am responsible for experienced a MySQL injection attack due to a vulnerability uncovered in the past few months. I was busy developing Vue.js code for the forums and thought to myself "I will get around to upgrading to Revive 4.2.0 (supposedly the... (0 Replies)
Discussion started by: Neo
0 Replies

2. Red Hat

I need help configuring postfix mail server within AWS

I am trying to setup the postfix email server on Redhat Linux 6.5 running as an EC2 instance in AWS. I can do reverse port mapping to open a port from our internal network to the AWS linux server, so we should be able to get to our mail server, even though it is a one way path from our internal ... (1 Reply)
Discussion started by: gandolf989
1 Replies

3. Linux

Binary files damaged after attack on the server

Hello, a few days ago (June 19) a server that I manage has suffered an attack. Analyzing the log I discovered that there were several attempts to access a web scanner called w00tw00t.at.ISC.SANS.DFind I set the firewall to prevent further visits from this scanner. The problem is that the... (3 Replies)
Discussion started by: viessenetwork
3 Replies

4. UNIX for Dummies Questions & Answers

Postfix as smtp server

hi guys I have to configure a SMTP server using Postfix, ok let me tell the domain is located at godaddy so my smtp postfix server has to use that domain let's say mycompany.com so anyone knows how to configure postfix using this way? or postfix is easy to configure? thanks a lot (3 Replies)
Discussion started by: karlochacon
3 Replies

5. UNIX for Dummies Questions & Answers

Please help with Postfix config issue - How to allow remote Exchange server to relay to my postfix

Hi guys One of our clients have a problem with sending email to a certain domain. No matter what we try, the mails just dont get delivered. What I did then, is created a new connector on their Exchange server, pointing all mail sent to their client at "domain1" to relay to our Postfix mail... (0 Replies)
Discussion started by: wbdevilliers
0 Replies

6. IP Networking

Postfix op OSX server

Hoi. :cool: Ik zit met een "simpel" probleem. Echter lukt het me niet de juiste oplossing te vinden. Graag jullie hulp. :b: Ik heb een OSX server origineel draaien. Mailserver is van postfix. DNS records wijzen goed. :D Mailserver bevind zich "achter" router (Wireless extreme) die weer... (1 Reply)
Discussion started by: Martyin
1 Replies

7. Ubuntu

Reg:Postfix Mail Server

We have a redhat enterprise linux 4 server.we have configured postfix as our MTA.squirrel mail as webmail and apache is configured for webserver.We configured outlook as mail client.The mail server is working and our users ae saving a copy of mail in the linux server.Our problem is whenever the... (0 Replies)
Discussion started by: ramjimh
0 Replies

8. Cybersecurity

what is the better way to protect my server from DDos Attack

heloo today i have DDos Attack in my server what is the better way to secure my server from DDos Attack i use CentOS 4&5 i try every firewall and talk to softlayer - iweb i've Tried every possible solutions but I can not find a solution to the problems Give Me The best way plzz (4 Replies)
Discussion started by: a7medo
4 Replies

9. UNIX for Dummies Questions & Answers

Configuring my PostFix Mail Server

Hi folks! I have a Postfix email server running on my MacOs x box. I would like to customize this automatic message to portuguese language: ============ This is the Postfix program at host myserver.com. I'm sorry to have to inform you that the message returned below could not... (4 Replies)
Discussion started by: fundidor
4 Replies