完了

Linux Server postfix configuration & Maybe Fail2ban installation

Problem:

Our server has been targeted to send a large number of spam emails which times out all sites on our server. we have to re-boot our server which can cause some site issues each time. each time our server slows down i get a text message to alert me that the server has timed out. everytime i check the mail queue 1000's of spam emails are in there so we delete via ssh

Security so far:

We have some hardening of server which only allows our ip address to access plesk, we have also installed watchdog

Requirements:

We have been informed we need to have the postfix configured to only allow mailboxes on server can send mail, we have also been informed fail2ban maybe good also

WE ARE NO EXPERT ON THIS ANYONE WHO KNOWS HOW TO TACKLE THIS ISSUE PLEASE QUOTE THE PRICE FOR WHAT YOU THINK NEEDS TO BE DONE THEN SEND US A MESSAGE WITH WHAT YOU THINK IS REQUIRED

We have a feeling one of our websites maybe be hacked but we have downloaded all files and scanned with avast

Example of spam:

Received: by (removed our server ip is here)(Postfix, from userid xxx)

id xxxxxxx; Fri, 26 Oct 2012 19:34:37 +0100 (BST)

To: "xxxxxxxxxx" <xxxxxxxx>

Subject: Your friend ...... OPEN TO WIN THE BIG LOTTO! ......... has recommended this great product from (our company name)

X-PHP-Originating-Script: 10000:[url removed, login to view]

From: "...... OPEN TO WIN THE BIG LOTTO! ........." <xxxxxxxxxxxxx>

MIME-Version: 1.0

X-Mailer: osCommerce bulk mailer

Content-Type: text/html; charset="iso-8859-1"

Content-Transfer-Encoding: quoted-printable

Message-Id: <20121026183437.981299043@xxxxxxxxxxxxxxxxxx>

Date: Fri, 26 Oct 2012 19:34:37 +0100 (BST)

https://xxxxxxxxx/server/[url removed, login to view]

スキル: その他, Linux, PHP, ウィンドウズサーバー

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採用者について:
( 11件のレビュー ) Bilston, United Kingdom

プロジェクトID: #2600961

アワード:

sunsefunfyns

Hello, Please check PMB.

£100 GBP 0日以内
(16レビュー)
4.0

5人のフリーランサーが、このジョブに平均£190で入札しています

aroel

I'm ready to help you on this

£200 GBP 0日以内
(77件のレビュー)
5.8
itamarjp

I can setup it now

£200 GBP 0日以内
(79件のレビュー)
5.7
PerlIsFun

Hi, I'm ready to help. The 3 steps to solve your issue will be approx: 1. Trackdown the current issue 2. Hardening Apache to prevent future attacks 3. Hardening Postfix to prevent future attacks Keep in mind th もっと

£99 GBP 2日以内
(11件のレビュー)
4.3
itconsultindia

php/mysql team

£350 GBP 3日以内
(8件のレビュー)
2.8