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I'm using vps server with ubuntu 10.04 when i send email i got this:

Mar 19 18:09:01 mail postfix/smtp[6340]: 8FAF722294: to=<>, orig_to=<root>, relay=none, delay=0.09, delays=0.08/0.01/0/0, dsn=5.4.6, status=bounced (mail for loops back to myself)

I look around inforums to find the solution but in vain even i changed my Postfix settings:

My destination setting was like this,, , localhost

i changed it to this

$, localhost,,

i made many variations but still not working.

the output of cat /etc/mailname

the output of postconf -n:

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
inet_protocols = ipv4
mailbox_size_limit = 0
milter_default_action = accept
milter_protocol = 2
mydestination = localhost.$, localhost,
myhostname =
mynetworks = [::ffff:]/104 [::1]/128 ip
myorigin = $mydomain
non_smtpd_milters = inet:localhost:8891
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_milters = inet:localhost:8891
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
share|improve this question
Do you want the mail to be delivered locally or externally? – ringø Mar 20 '13 at 11:27
locally i use my own smtp to send an email. – Omer Stimpack Mar 20 '13 at 11:33

1 Answer 1

Based on comments:

The problem is the sending of a mail to, thus the problem is unlikely to be linked to mydestination, and it appears DNS resolution is not setup.

In this case please put a value in /etc/resolv.conf either based from your ISP data (DNS servers), or use the Google server - eg for Google:


then try to resolve the MX entries for

host -t mx

If that works, you can now try to send an email to

Note: if you use the NetworkManager, use it instead to set the DNS servers values.

Note2: if that doesn't work, please display the last lines of /var/log/mail.log

-- edit - previous answer for a local delivery problem --

The $mydomain variable (some info) is set to the local machine name minus the first component (/etc/mailname is used on Debian). When you send a mail to a MX DNS query is performed to identify what server is expected to accept the mail. The first step is to check what is that server

host -t mx

that will give you what you have to add to mydestination for postfix to understand the mail is to be delivered locally,

mydestination = localhost.$mydomain, localhost, mail.$mydomain

If the result is actually your domain (you can check the name with

uname -n

if you get a FQDN entity, remove the first component - e.g. for, your domain as set by posftix is And ensure that value is in mydestination (if the value from host it is the same as $mydomain, simply set

mydestination = localhost.$mydomain, localhost, mail.$mydomain, $mydomain
share|improve this answer
when i check host -t mx it tells host: parse of /etc/resolv.conf failed and when i check my hotname is – Omer Stimpack Mar 20 '13 at 11:53
That means your system cannot send mail outside since DNS resolution is not setup - this is not the problem anyway. Add $mydomain to mydestination and mail should be delivered locally (or simply add '', the mail should go to '') – ringø Mar 20 '13 at 11:59
i have already send an email Gmail and works fine. the loop back to myself appair when i try to send to hotmail. – Omer Stimpack Mar 20 '13 at 12:04
Ah, this is the opposite problem! Let me edit the answer... – ringø Mar 20 '13 at 12:13
In this case, what can i do ? – Omer Stimpack Mar 20 '13 at 12:47

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