FQDN problem, maybe bad configuration postfix?

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#1 Wed, 03/27/2013 - 15:50
xube

FQDN problem, maybe bad configuration postfix?

I have a problem with sending email on some servers. Maybe solution will be rid off .localdomain from recipient address. But i don't know how.

I can send emails to varied domain, even gmail has no problem but some return mail with error, for example:

<email@azet.sk>: host smtp2.azet.sk[91.235.53.42] said: 554 5.7.1
    <email@azet.sk>: Recipient address rejected: Invalid HELO/EHLO; Cannot
    resolve 'fantasyshop.localdomain', no such domain (in reply to RCPT TO
    command)
-----------------
Reporting-MTA: dns; fantasyshop.localdomain
X-Postfix-Queue-ID: 60D373602F63
X-Postfix-Sender: rfc822; fantasyshop@fantasyshop.sk
Arrival-Date: Wed, 27 Mar 2013 15:35:22 +0100 (CET)

Final-Recipient: rfc822; email@azet.sk
Action: failed
Status: 5.7.1
Remote-MTA: dns; smtp2.azet.sk
Diagnostic-Code: smtp; 554 5.7.1 <email@azet.sk>: Recipient address
    rejected: Invalid HELO/EHLO; Cannot resolve fantasyshop.localdomain', no
    such domain

I looked for solutions almost 2 months but i could not find out the right one for my problem.

Thanks for any advice, Igor

PS: Sorry for my English

Wed, 03/27/2013 - 18:33
andreychek

Howdy,

Yeah, it does seem as if it may be an issue with the hostname.

What output do you receive if you run this command:

hostname

Thu, 03/28/2013 - 03:22
xube

Hello,

Here is output:

user@fantasyshop:~# hostname
fantasyshop user@fantasyshop:~# hostname -f
fantasyshop.sk

Thank you for further advice.

Thu, 03/28/2013 - 08:22
andreychek

Howdy,

Hmm, I'd recommend changing your hostname to an FQDN... something like "host.domain.tld".

You can change that in Webmin -> Networking -> Network Configuration -> Hostname and DNS Client.

After doing that, restart Postfix using this command:

/etc/init.d/postfix restart

After performing the above steps, does that resolve your issue?

-Eric

Fri, 03/29/2013 - 13:12 (Reply to #4)
xube

Thank you, Eric,

Looks like my problem is solved. It was my fault with understanding FQDN. I thought it means just domain name without any prefix before it.

One question for future. Do i need add any A name to DNS records for host? I mean, when i put host.domain.tld, do i need put host to A record or to any config file in system?

Sorry for my noobish questions, just want to make it right :-)

Thank you again.

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