Q: - What is Greylisting ?
Greylisting (or graylisting) is a method of defending e-mail
users against spam. A mail transfer agent (MTA) using greylisting will
"temporarily reject" any email from a sender it does not recognize.
If the mail is legitimate the originating server will, after a delay, try again
and, if sufficient time has elapsed, the email will be accepted. If the mail is
from a spam sender, sending to many thousands of email addresses, it will
probably not be retried.
Q: - Can we have two apache servers having diff versions?
Yes, you can have two different apache servers on one server,
but they can't listen to the same port at the same time.Normally apache listens
to port 80 which is the default HTTP port. The second apache version should
listen to another port with the Listen option in httpd.conf, for example to
port 81.
For testing a new apache version before moving your sites from
one version to another, this might be a good option.You just type
www.example.com:81 in the browser window and you will be connected to the
second apache instance.swers 9
Q: - What is Greylisting ?
Greylisting (or graylisting) is a method of defending e-mail
users against spam. A mail transfer agent (MTA) using greylisting will
"temporarily reject" any email from a sender it does not recognize.
If the mail is legitimate the originating server will, after a delay, try again
and, if sufficient time has elapsed, the email will be accepted. If the mail is
from a spam sender, sending to many thousands of email addresses, it will
probably not be retried.
Q: - Can we have two apache servers having diff versions?
Yes, you can have two different apache servers on one server,
but they can't listen to the same port at the same time.Normally apache listens
to port 80 which is the default HTTP port. The second apache version should
listen to another port with the Listen option in httpd.conf, for example to
port 81.
For testing a new apache version before moving your sites from
one version to another, this might be a good option.You just type
www.example.com:81 in the browser window and you will be connected to the
second apache instance.
Greylisting (or graylisting) is a method of defending e-mail users against spam. A mail transfer agent (MTA) using greylisting will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate the originating server will, after a delay, try again and, if sufficient time has elapsed, the email will be accepted. If the mail is from a spam sender, sending to many thousands of email addresses, it will probably not be retried.
Q: - Can we have two apache servers having diff versions?
Yes, you can
have two different apache servers on one server, but they can't listen to the
same port at the same time.Normally apache listens to port 80 which is the
default HTTP port. The second apache version should listen to another port with
the Listen option in httpd.conf, for example to port 81.
For testing a new apache version before moving your sites from one version to another, this might be a good option.You just type www.example.com:81 in the browser window and you will be connected to the second apache instance
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