আমার দুটি Linux Server আছে। দুটি Server এই খুব স্পামিং হচ্ছে, কিভাবে স্পামিং কমাতে পারি, বুঝতে পারছিনা। আমি Shell এ দুটি কমান্ড ব্যাবহার করছি, একটি কোন ফাইল থেকে স্পামিং হচ্ছে সেটা খুজে বের করার জন্য, অপরটি মেইল এর কিউ কে খালি করার জন্য । কিন্তু কোনো কাজ হচ্ছেনা। আমাকে কি কেউ স্থায়ী সমধান দিতে পারেন। সমাধান পেলে অনেক উপকৃত হবো।

Commands : exiqgrep -i | xargs -I {} exim -Mvh {} | grep PHP exiqgrep -i | xargs exim -Mrm

asked 20 Jan '15, 08:21

Minhaj%20Hasan's gravatar image

Minhaj Hasan
59421036


There are number of steps to take which would make large scale spamming difficult.

Such as;

  1. Rate limit outgoing mail per-user, to prevent large mail shots of UCE

  2. generate weekly reports of outgoing smtp mail per-user, so you can see who is bulk sending

  3. Require users to use correctly formatted RFC headers, which can block simplistic spamming

  4. use spamassassin and MIMEdefang to alert on very "spammy" outgoing messages

The above steps are dependent on what platform and what MTA you are using. I use logwatch to monitor the /var/log/maillog, but tools like munin, and collectd, or nagios can be configured to execute custom scripts to monitor per-user.

You can sign up for RBL monitoring services, which will give you a retrospective view of whether the server is being used to originate UCE, or other abuse mail;

http://mxtoolbox.com/services_servermonitoring2.aspx

http://blacklist-monitor.simplycast.com/Multi-Channel/blm/blacklist-smtp-check.html

permanent link

answered 26 Jul '16, 09:20

Jony's gravatar image

Jony
313

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question asked: 20 Jan '15, 08:21

question was seen: 1,209 times

last updated: 26 Jul '16, 09:20