I have RedHat9 server (MTA is Postfix), LAN, full-time internet connection, public ip and registered domain.

My main.cf file is like that:

myhostname=ns1.mydomain
myorigin=mydomain
inet_interfaces=all
mydestination=myhostname, localhost.mydomain
mynetworks= mynetwork, 127.0.0.0/8
relayhost=[mail.mydomain]

etc.


My problem is, that I can't send mails out to the internet.
If I try to send the "mail logs" gives me a message :

to=<user@hotmail.com>, relay=mail.mydomain[ip], delay=0, status=bounced
(mail for [mail.mydomain]loops back to myself.)

Why can't I send mails out to the internet

Are you trying to send mail using an account with a domain other than your own?
For instance....your machine is using myredhatbox.com, but you are attempting to use another domain to send mail, like user@earthlink.net?

If this is the case, you will not be able to send mail.
Virtually all SMTP mail servers are configured to reject mail on this basis to prevent spoofing/spamming.

I've sent mail with my domain.
For example:
my domain is example.com, and my mail server name is mail.example.com.
I set relayhost=mail.example.com.
I've tired to send mail from user@example.com to user@hotmail.com and I can't. I think it is possible, but i don't know why doesn't work?
Must I set the relayhost in my case?

I've just found out that I can't receive mails as well .
I don't know what is happening at me, but every mail (incoming, outgoing) is bounced of my mail server except the local mails.
What is the problem?
Has anybody an idea?

I'm not totally sure, but it could have something to do with MX records. Try looking that up on google. Sorry I can't be more of assistance.

your mail program may be configured to look up the /etc/hosts file first ...

what entries do you have in your /etc/hosts file?

if you just have

127.0.0.1 localhost.localdomain localhost

then this may be causing the problem.

try adding the line

<machineIPaddress> <yourhost.yourdomain> <yourhost>


cheers
Bithika

If my domain is example.com

My MX record is like that:

@ MX 2 mail.example.com.

and this record takes place in the example.com.zone file.
Is it correct?

In the /etc/hosts file there are only two records :

127.0.0.1 ns1 localhost.localdomain localhost
xxx.xxx.xxx.xxx ns1 localhost.example.com localhost

ns1 is the hostname of the machine.
Is it correct?

try removing ns1

so that your /etc/hosts looks like


127.0.0.1 ns1 localhost.localdomain localhost
xxx.xxx.xxx.xxx localhost.example.com localhost

try removing ns1

so that your /etc/hosts looks like


127.0.0.1 ns1 localhost.localdomain localhost
xxx.xxx.xxx.xxx localhost.example.com localhost

I've removed but the problem is the same.
Have you any other idea?

RedHat9, postfix
I have a receiveing mail problem.
I have public ip and a registered domain for example "example.com". My mailserver machine name is :

mail.example.com

My MX record in the example.com.zone file is:

@ IN MX 2 mail.example.com

If I try to send mail to user@example.com from remote email (for example user@hotmail.com), I can't receive the mail, but if I send mail to user@mail.example.com I can receive the mail.
Why can't I receive mails to address user@example.com?

I have a public ip, registered domain, full-time internet. I use postfix as my MTA.
Let's suppose that my domain name is example.com, and my mail server name is mail.example.com


I can't send mails to reomte domains.
For example :

from my_user@example.com to tippnet_user@tippnet.com

But If I know the name of the remote mail server (in our cases mail.tippnet.com), I can send mail to tippnet_user@mail.tippnet.com.

If I try to send mail from remote address to my address :

from tippnet_user@tippnet.com to my_user@example.com

I can't, but if I try this:

from tippnet_user@tippnet.com to my_user@mail.example.com

I receive the mails

Why does it happen?

gubak

You should have some keyword/setting that should configure postfix to accept mails for your domainname.

gubak I have answered to your other post at

http://www.linuxquestions.org/questi...31#post1126731

gubak, you started three seperate threads for the exact same problem. Please do not do that! It scatters the answers over multiple threads and makes it much harder for people trying to help you. I've merged all three threads together now. If you have any more questions about your issues with Postfix and e-mail, please post them in this thread.

Thanks.