Ψάχνοτας για SPF Records έπεσα στο παρακάτω. Τα SPF Records μας καλύπτουν ή πρέπει να μπουν και τα DOMAIN KEYS ?
Set up SPF (Sender Policy Framework) records on your server
. SPF is an open standard created to stop forgery of From addresses. Because the majority of spam emails are sent
from forged email addresses, SPF records allow the receiver’s host to verify
that the email is being sent from the server it asserts it’s sent from. It’s
like the email sender is telling to the receiver “I send emails from this
computer only”. So, if any other machine tries to send an email from the same
domain, the receiver’s mail server knows the From email address is forged. SPF
standard is being used by a number of ISPs (including several large providers
such as Hotmail, Yahoo, AOL, etc.) and mail hosts. Email senders will need to
correctly setup SPF records for their domains if they want their messages to be
accepted by those providers. You can ask your hosting company to setup SPF
records for you. Or, if you have access to your cPanel, you can do this yourself
without your hosting company’s help. Just go to your cPanel and click on Email
Authentication. Then enable the authentication parameter you would want to apply
to your emails.
Enable Reverse DNS on your mailhost
. This is another way to authenticate the email sender to the receiver host. Reverse DNS lookup implies determining what
host and domain name belong to a given IP address. If a Reverse DNS Lookup
returns a “no domain associated”, then the email will likely bounce to the
sender, or will be deleted or filtered. To avoid Reverse DNS Lookup problems,
follow these simple rules: 1) don’t send emails directly from your home computer
(always use an SMTP server when possible) and 2) don’t send emails from a crappy
shared hosting server for a small fee monthly fee. Get a solid host, better yet
a VPS (virtual private server) or a dedicated server and ask your hosting
company to enable Reverse DNS for you.
Set up DomainKeys. This is the next step to do after you setup your Reverse DNS records. According to Wikipedia “DomainKeys is an e-mail authentication system
designed to verify the DNS domain of an e-mail sender and the message
integrity”. In other words, DomainKeys authentication system checks if the email
is really sent from the domain it claims to be sent from. By installing
DomainKeys you can help your server deliver your emails directly to the
recipient’s inbox. DomainKeys authentication was first implemented by Yahoo and
it’s now used by Gmail as well. If you don’t have DomainKeys installed, your
emails sent to Yahoo and Gmail addresses will be the subject of a more thorough
filtering.
Ευχαριστώg-int