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Email Questions Page 2
Email Questions
Page 1
Q: Can
email quotas be set automatically?
A: Quotas are not set automatically; if you
wish to set a quota on an individual user's email account, you must do so
through the vadduser or vedituser command.
Or for your convenience, a Web interface to both of these commands is included
in the Virtual Administration
Suite. You can add or edit users via the VAdmin Suite Email Manager.
Q: How
can I prevent others from relaying Spam through my Virtual Private Server?
A: While receiving SPAM can be very
annoying, as a Virtual Private Server Administrator the problem is compounded when
spammers send their bulk email messages through your Virtual Private Server's SMTP
server. Such practice, known as Spam Relaying, makes it look as though you are
the culprit--when in fact, you are as much a victim as the spam recipients
themselves. To make matters worse, if other ISPs see a large amount of spam
coming from your Virtual Private Server, you may find yourself blacklisted - even though
you are innocent.
As anyone who has been a victim of spam relaying knows, it’s not a very pleasant
experience. If you leave your mail server unprotected, however, you are a
potential target for spam relayers.
PopAuth offers a way to protect your Virtual Private Server from being used as a mail
relay for bulk emailers. PopAuth is a new type of anti-relay protection that is
very functional and easy to use. We encourage all of our customers to implement
this feature on their Virtual Private Servers immediately.
Q: How
do I setup email for my virtually hosted clients with the same usernames?
A: Your Virtual Private Server can have more than
one domain name associated with it. Using more than one domain name on a Virtual Private Server is called Virtual Hosting.
Email accounts and email aliases can apply to any and all of the domain names
associated with your Virtual Private Server. For example, if the domains 123.com and
abc.com both point to your Virtual Private Server, then an alias on your Virtual Private Server
called webmaster will work for mail sent to webmaster@123.com and webmaster@abc.com.
However, what if you wanted webmaster@123.com to go to a different account than
webmaster@abc.com? The solution to this problem is called Virtual Email mapping,
or virtmaps.
Q: How
do I change a user's email/FTP password?
A: To change the password of one of your
users, Telnet to your Virtual Private Server and type the following at the command
prompt, where username is an actual username:
vpasswd username
You are prompted for a new password, which you must confirm by typing a second
time. For security purposes, the password will not display on the screen.
Q: Can
email quotas be set automatically?
A: Quotas are not set automatically; if you
wish to set a quota on an individual user's email account, you must do so
through the vadduser or vedituser command.
For your convenience, a Web interface to both of these commands is included in
the Virtual Administration
Suite. You can add or edit users via the VAdmin Suite Email Manager.
Q: I
get the following error: 'Mail loops back to me: MX error.'
A: This error often occurs when you try
sending mail to a user account on a virtually hosted domain.
If you are getting this error, you most likely do not have an entry for the
user's domain name in your ~/etc/sendmail.cw file.
Unless you add the domain name to this file, you will be unable to receive email
messages addressed with the domain name.
Q: How
do I change a user's email/FTP password?
A: To change the password of one of your
users, Telnet to your Virtual Private Server and type the following at the command
prompt, where username is an actual username:
vpasswd username
You are prompted for a new password, which you must confirm by typing a second
time. For security purposes, the password will not display on the screen.
Q: How
do I disable email authentication warnings?
A: You may have wondered about a mysterious
message that appears in the extended email headers of mail sent from your
Virtual Private Server. This 'x-authentication-warning' message can easily be disabled
by changing one line of your ~/etc/sendmail.cf file.
If you have seen these messages and want to disable them, open your ~/etc/sendmail.cf
file in the pico editor and comment out the following line:
O PrivacyOptions=authwarnings
To comment out this line, simply add a pound sign (#) to the beginning of the
line, as follows:
#O PrivacyOptions=authwarnings
NOTE: Be very careful when editing this file. It is a very important but
very complex file that is easily corrupted. You should make a backup of this
file before editing it.
Q: How
do I setup email service for my virtual hosts?
A: Normally when you run the "vaddvhost" command
you do not have to do anything else, but to double check that email service is
set up read the below section.
NOTE: This section requires modification of your sendmail.cw file.
Because this is a very important and somewhat complex file, we recommend you
make a backup copy before making any changes.
To add email service for your virtual hosts, SSH (secure telnet) to your Virtual Private Server and follow the steps below:
cd to your /etc directory by typing the following command at the prompt:
cd etc Enter
Open the sendmail.cw file in the pico editor.
Add your virtual hosts, one per line, into the sendmail.cw file as shown below:
johndoe.com
janedoe.com
mycompany.com
The virtual host entries you add to the sendmail.cw file will now be able to use
email POP and SMTP.
Q: How
do I use autorespond / autoreply?
A: The Auto-Responder program is already
installed and configured in your /usr/bin/ directory.
To set up an Auto-Responder that sends an autoreply message, follow the steps
below:
Create an autoreply message (the message sent back to the customer) in your home
directory:
pico ~/.autoreply
Add something like the following to your "etc/aliases" file:
info: NAME@DOMAIN_NAME, "|/usr/bin/autoreply -f info-reply
-a info"
Your entry should appear on a single line within your Unix editor.
Run the vnewaliases command to update your etc/aliases.db file.
With the above example, when your customer sends you mail at "info@DOMAIN_NAME"
it will send back whatever message is contained in the ~/.autoreply file (NOTE:
You can use the "-m" option to specify a different message file (i.e. "autoreply
-m /etc/mymessage").
The "-f" option allows you to change who the autoreply message will be from (in
the example above, the "From:" field the customer gets will read "info-reply@DOMAIN_NAME").
The "-a" option specifies the alias that the autoreply can reply for; this
should be the same as what is in front of the ":" in the aliases file.
Note that in the above example, mail sent to "info@DOMAIN_NAME" will also be
sent to "NAME@DOMAIN_NAME." If "NAME@DOMAIN_NAME" were left out, you would not
receive a copy of the email from the customer.
Email
Questions Page 2
Please
Contact Us if you have any questions
concerning RSH Web Services products or services.
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