How to Secure SMTP of Mail Enables
Security of SMTP is always an challenging task,without SMTP Security your Mail Server is vulnerable and can be a sweet dish for spammers,they can easily spam as much as they can and Ultimately your Mail server will be in Spam list and domains inside this mail Enable server will unable to send email to potential mail servers like Yahoo mail and hotmail and other world wide recognised mail services,what to do in this critical situation,how to secure and what precautions and measurement should take to prevent from spammers,here are some points we bring today to prevent SMTP Server in better ways
Reject Mail If sender Mail is Invalid:
When a client is dispatching posted letters to MailEnable, this choice will ascertain the From address in alignment to verify the domain it is approaching from. It works through a senders (FROM) address in the wrapper or order note for an internet note having the domain exposed from an internet note address. This will then have a DNS tenacity lookup accomplished on the domain title MX record to glimpse if it is listed as a posted letters server. If not then the note will go incorrect with a enduring error. This is utilised to halt persons mishandling the posted letters server by utilising incorrect information. The most of persons who use an incorrect From address are spammers. This may sway legitimate internet note from incorrectly configured purchasers, so supervise the logs often
Restrict the Number of Receipient per Email:
This feature is very handly indeed by restricting at least you can restrict to user how much emails you can allow suppose if you allow 100 emails per hour it will be sufficient in corporate envoirnment and Users will be able to send as much as you allow and your mail server will be saved from spaming and no one can exceed the limit
PTR DNS Entry to unauthenticated addresses:
If an inbound attachment has not been authenticated, MailEnable will gaze up to glimpse if there is a PTR DNS application for the connecting IP address. MailEnable will not validate if the application is legitimate, it will ascertain to glimpse if one exists. Local IP locations are not checked for PTR entries
- in Knowledge Base
- by WinsHosting
- October 6, 2011
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