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Author Message
 sendmail doesn't work!
My sendmail send me strange message at sturtup:
unix sendmail gethostbyaddress( failed:1 - computer with FreeBSD

how can I set up mail domain for sendmail...???

 Wed, 31 Dec 2003 00:11:42 GMT   
 sendmail doesn't work!

That's because there is no name associated with the address. Sendmail
use DNS for name resolution so i think i would be a good idea to either
setup your machine for a DNS or set a DNS server on the machine.


 Wed, 31 Dec 2003 01:07:50 GMT   
 sendmail doesn't work!

Or simply edit /etc/hosts

 Wed, 31 Dec 2003 06:05:36 GMT   
 sendmail doesn't work!
Actually what you should do is edit /etc/mail/
and there is a line fully qualified domain name if sendmail can't resolve
it. You specify a name there and sendmail will start.

 Thu, 01 Jan 2004 00:12:59 GMT   
 sendmail doesn't work!
To Eric

But I've got this file and it's consist next:           localhost         srv          srv.coam. blah....blah... blah         user1        user1.coam. blah....blah... blah         user2        user2.coam. blah....blah... blah

but I can't even ping it at name...

so I can ping - its work!
but ping localhost(or any computer name) - doesn't work
and I recive next message - ping: cannot resolv localhost: Host name lookup failure

as I inderstand something wrong in my DNS.... but I don't know what :(

To Alex

Where do I need edit? What line do I need to edit? How does it look?

Thank for you help!

 Fri, 02 Jan 2004 23:42:29 GMT   
 sendmail doesn't work!
So I decided my problem with ping...

But I still can't send e-mail from my network computers :(

This is message I got from my Outlook Express:

The message could not be sent because the server rejected the sender's
e-mail address. The sender's e-mail address was
''. Subject 'Test', Account: 'test', Server:
'', Protocol: SMTP, Server Response: '451 4.1.8
<>... Domain of sender address does not resolve', Port: 25, Secure(SSL): No,
Server Error: 451, Error Number: 0x800CCC78

??? I have no idea what does it mean


 Sat, 03 Jan 2004 18:35:32 GMT   
 sendmail doesn't work!

You have something wrong with your DNS server or
you do not have sendmail setup to relay for your
domain properly.

You should be able to do the following for any host
on you network you want to send mail from.

$ nslookup
Default Server:
Address:  10.Blah.Blah.Blah

Address:  10.blah.blah.blah    preference = 1, mail exchanger =  nameserver =    internet address = 10.blah.blah.blah

If this does not work then your DNS server is messed up.

If this works, then you have relaying messed up and you need to
figure that out. sendmail is a monster to configure unless
you are already very familiar with smtp.

I recommend
"Running Qmail", Rich Blum and Richard Blum.
DNS and BIND, Cricket Liu

My answers are not exhautive treatises and I may have left out important
notes which I am sure  others will  comment  on in the  future. There is
always more than one way to skin a cat. If you want a  complete  list of
options please Read The Fine Man[ual] Page.

 Sun, 04 Jan 2004 05:41:16 GMT   
 sendmail doesn't work!
I realised.... I have problem with my DNS...

Thanx to all!

 Sun, 04 Jan 2004 15:16:13 GMT   
   [ 8 post ] 

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