Email being marked as spam - localhost.localdomain

[deluge]

Hello,

Lots of my mail is getting bounced back marked as spam, I checked at http://cbl.abuseat.org/helocheck.html and followed the instructions to check why:

One way of testing whether your mail server is misconfigured is to send an email through it to [email protected]. You will get a virtually immediate rejection.

In other words, you will get bounce message back that appears to indicate that your email to helocheck didn't work. It did. It's _supposed_ to work that way. The important piece to check is the error message you see.

Examine the error message, and you should see something like one of the following lines:

#5.1.1 SMTP; 550 Your HELO name for IP address 1.2.4.6 was "localhost.localdomain"
#5.1.1 SMTP; 550 Your HELO name for IP address 1.2.4.6 was "localhost"
#5.1.1 SMTP; 550 Your HELO name for IP address 1.2.4.6 was "smtp"
#5.1.1 SMTP; 550 Your HELO name for IP address 1.2.4.6 was "1.2.4.6"
#5.1.1 SMTP; 550 Your HELO name for IP address 1.2.4.6 was "[1.2.4.6]"
#5.1.1 SMTP; 550 Your HELO name for IP address 1.2.4.6 was "mail.example.com"

It should be the fully qualified domain name for your mail server or an IP address enclosed in square brackets.

Sure enough my mail came back - this is the header returned from the mail I sent:

<[email protected]>:
216.168.28.54 does not like recipient.
Remote host said: 550 Your HELO name for IP address --- was "localhost.localdomain"
Giving up on ---

I've been looking in the plesk panel but am totally lost as to what I need to change, in server/server preferences there's a a box:

System preferences

Full hostname * localhost.localdomain


Should I change this and what do I enter in - the server IP or one of my domain names?

 

[blank_page]

Hello,


Did you set your hostname before plesk install?

hostname -f
should return it.

If not then complete /etc/hosts and force the install.

 

[deluge]

Hi,

Plesk came already installed with the server.

Could you explain how to run this command (I'm completley new to this as I was on shared hosting before )

hostname -f
should return it.

 

[blank_page]

Hello,

You need to log in via ssh.
You can use putty a free software to connect as root to your server.
Once logged in you type:

hostname -f
vi /etc/hosts
insert button you insert
modify the lines
esc
type :wq

 

[deluge]

Thank you, got it working now

 

[whitedar]

I'm also having this problem. When I SSH and do a hostname -f I get localhost.localdomain.

I'm not sure I completely understand the fix as I'm a newbie to this. Do I type in exactly what blank_page says to do? Am I hitting "enter" after every line that he lists? I'm just trying to resolve an issue where we keep getting detected as a bad/spamming IP and one of the checks was to do a HELO check which returns same localhost.localdomain mail message that deluge was having problems with. Any help would be greatly appreciated.

TIA.

 

[adc124]

I've had a similar problem with mail being rejected as potential spam and recently changed my hostname. Sending an email to [email protected] I get back the correct hostname that I have now set, but emails are still being rejected.

However, the rejection emails I'm receiving appear to be coming from [email protected]. Is this the problem? And if so, can anyone help fix it?