:  POP3 and IMAP4 are email receiving protocol. To send email, Outlook Express and Microsoft Outlook have to use SMTP protocol. Our email system provide SMTP authentication to protect our customers from spam or junk mails. To use our email authentication, email client have to use our setting from below.

 : There are many reasons to cause email failure and most of them are from the following reasons.

 : There are several reasons but most of the times are of the following.

 : You can use Rules to block or move unwanted emails to deleted folder.

For example:
Rule Condition : From in test@abc.com,*@def.com
Rule Action1 : Store in Trash
Rule Action2 : Discard

As a result, when sender address are from test@@abc.com or any accounts with def.com domain, all mails will be move to trash automatically.

If you want to block unwanted mails, use the following setting.
Rule Condition : From in test@abc.com,*@def.com
Rule Action : Discard

As a result, all emails from test@abc.com or any accounts with domain def.com will be blocked.

Or you can follow the manual to add any unwanted email addresses in to blocked sender address list.

 : You can do the following steps.

 : When email client download mails from server through POP3, all those mails are marked as downloaded and create index for those mails. If the index are deleted or damaged (from any reasons), all mails will be downloaded again. This might cause mail duplication problem. To solve this problem, methods are different in each email client.

In many cases, the problem occurs with users who use POP3 email client to download mail from more than one account and keep all downloaded messages on the server. And the indexes for storing unique id of downloaded messages are damaged. To prevent this problem, you can set your mail client to delete downloaded messages from server.

 : In general, system filter all spam mail by the following factors.

1. Source of IP address.
2. Header content (Ex: Return-Path, Message-ID, From and etc.)
3. Executable file extensions in attachment (Ex: .exe, .bat, .sys, etc.)
4. Content in mail body.
5. Using antivirus and antispam software to scan.

 : In general, mail content that has Thai language use standard character encoding as Windows-874, TIS-620, ISO-8859-11 or UTF-8. Other than those character set, recipient cannot read the message. To prevent this, sender has to use standard character encoding to send an email.

 : Vacation Message function is an auto-response system to reply incoming mails. Normally, it will be used when users are on vacation, leave or any circumstances that users cannot reply mails. For more information, please read from the following manuals.

 : Spoofing Mail is a mail that tricks or pretends that the mail is sent from another person or trusted person. Most of the time, sender intends to get information from recipient or to avoid antispam system. To prevent spoofing mail, use Sender Policy Framework to check sender.

To protect from spoofing mail, domain owner have to set their domain sender policy by setting mail server's name or IP address to other servers. When someone tries to impersonate domain that has sender policy, most of modern servers are able to detect that mails are spoofing mails or are sent from fake server. System administrator can use this information to block or manage senders in proper way.