How to Secure email

This article was written because many friends are less concerned writers e-mail security.
Ordinary person to use e-mail us to perform illegal acts, fun, viruses, or e-mail bombing.
If you are one who already knew / experts on this, or that are not so concerned e-mail security, please ignore this article.

Password Protection
To be able to access e-mail on your ISP, free webmail such as yahoo.com or even the mail service from our own server, you need a word or phrase, called a password, to protect our mailboxes from access by unauthorized people.
Password should e-mail access is difficult to guess someone else, in particular by making a variety of characters including special characters and do not use the phone number, birth date, name, car license plate number, or information that really easy to predict.
Examples of good _cukup_ password, it is recommended you have a long password (more than 8 characters):
W47Ik +-w33K $ eNax5
@ 7h3-53a.
cookies | n6 = c4T

Protection log-in and log out of webmail
After log-in to webmail and do activities such as writing and reading e-mails, make it a habit to always log-out if it was done, for example: by clicking the log out of webmail mailbox. Webmail will not know we have not come out if we do not do log-out. Our webmail can be used by other people who are not entitled to take advantage of the history and cookies are not deleted.
Today many ISP or free webmail webmail access opportunities have been out by people who have no right to allow time for active / browser period.
Users who do not respond that is, the click, or activity on webmail will be logged out by the service provider's mail server.
So if a user wants to go again, he must log-in again.

Use SSL
If the server supports SSL webmail better use. Generally webmail IT companies providing SSL though not all of them. To use SSL on Apache using mod_ssl, update version is to reduce the existing bugs. Some time ago a bug in mod_ssl was quite popular, see bugtraq.

Protection against viruses

* The Server
o Configure your mail server
Configuring your mail server to filter out the header, body, attachments, etc. that contain the patterns of virus or worm, for example a file attachment that contains the extension *. vbs, *. pif, and others.
o Install anti-virus on mail server or your network gateway.
You can use a commercial antivirus or a free home kept updated. Some commercial antivirus demo version is also provided.
ClamAV is one of the free antivirus that may be able to use. For until now could only quarantine ClamAV mails that expressed virus in the body or attachments, and do not clean it.
o Configure your firewall and IDS
Configuring your firewall can filter packets / e-mail that contains a virus or a worm pattern.
* The client
Do not ever open an attachment from an e-mail that we do not know who the sender, if the sender is a friend, we must remain cautious can be the program's e-mail we are infected with the virus, for example love letter virus that can spread to infect your computer , find e-mail address in the address book and sends itself to these addresses with the mail-client that is in the computer example: outlook express.

Protection of open-relay mail server
The mail server should be protected from open relays, if your server is not going to be targets of spammers. Open-relay mail server will give access to others outside your network to be able to use these mail servers to send e-mail with a domain name on the network / server-mail your / specific. You would not want to suddenly be given a warning, in-tires, etc. as spam in some people when you do not do it.

Protection against SPAM mail or e-mail bombing
Configure your e-mail us by setting SPAM blocking certain addresses that have been put to SPAM us or with the default settings size of the e-mail server dibloking by e-mail us. Each different mail server configurations. To configure SPAM blocking webmail can usually be configured in the preferences. To use the mail client can use the supplied filter, block e-mails that are not appropriate / desirable to rule in your filter.

Protection with PGP
PGP (Pretty Good Privacy) is a software made by Philip Zimmermann to encrypt or encode an e-mail or our data.
Information can be found at Network Associates, a commercial version and version gratisnya.
Each user will have a PGP key pair, the private key and public key.
Public key can be given to colleagues or friends who want to send e-mail messages or encrypted secret to our place.
With our public key, we can co mengenkripsikan e-mails.
We are able to decrypt the private key which is a key partner of our public key.
So, if the e-mail us at the time of shipment intercepted or have someone who wants to try to see the contents of our e-mail that looks just junk data.
For example I want to send an e-mail to my friend whose contents:

'I want to meet you in the front stalls campus Bu deket Juminem date 13 years 32 months of 2009, is a secret! "

If encrypted with PGP will be for example:

qANQR1DBwU4DOpYKn67Asa4QCACvlKXh1rJl9H86Hn2NWw8ksMib9gXpwj + jzj2L
ZzmRR0HKxcjMWxX6xVUuZjl7j85EdLVYHy7t + KYSR1nA4zSl4NhwTGppipWyV3Z1
KE6I26uIzANdRK8tZKfl3IBFXWmY + qllo4i/u1b/6wuquRoZk5URWTPXWeiUhB2m
rL5J4mPPVuiDynCRLaICRJ + R + w2B23FeaQjYvpyg7VEpbgoAv7QfuCaHsfObXhgf
y2IJBv/SyWvUStrX/Nv3zcBmDCxXFi8CxmbyFRdl8vBeskxuO8r0aU8XdSJbIRdV
D6tfHYGRx6k79U1FgP39xBIi0Bg0wvM1IOc/pQ05/jX7 + Mw +1 uFs9EEDto80ZClJ
DQA7phEjuM4TrJEAegzQrrWOYA ==
= A cm

Thank you for reading this article, may be useful.