Postfix relay problem

[Luc MAIGNAN]

Thanks for your response :

I've put in main.cf :

smtpd_helo_required = yes
smtpd_recipient_restrictions = reject_unknown_recipient_domain 
reject_unauth_destination


Result of postconf -n is :

alias_database = hash:/etc/postfix/aliases.db
alias_maps = hash:/etc/postfix/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
html_directory = no
inet_interfaces = all
local_recipient_maps = unix:passwd.byname $alias_maps
mail_owner = postfix
mail_spool_directory = /var/spool/mail
mailbox_command = /usr/bin/procmail -a "$EXTENSION"
mailbox_size_limit = 102400000
mailq_path = /usr/bin/mailq
manpage_directory = /usr/local/man
message_size_limit = 102400000
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, 
www.$mydomain
mydomain = mydomain1.com
myhostname = mail.mydomain1.com
mynetworks = 192.168.26.0/24, 192.168.62.0/24, 127.0.0.0/8
mynetworks_style = host
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
relay_domains = mydomain1.com mydomain2.com mydomain3.com
relayhost =
sample_directory = /etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtpd_helo_required = yes
smtpd_recipient_restrictions = reject_unknown_recipient_domain 
reject_unauth_destination
unknown_local_recipient_reject_code = 450
virtual_alias_maps = hash:/etc/postfix/virtual



BR

Stuart Sears a écrit :
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> Luc MAIGNAN wrote:
>   
>> Hi all,
>>
>>
>> my mail server provides an stmp access. I thought I've configured it to
>> deny relay. It is true when I try basically to send a mail to another
>> domain. But some persons seem to bypass this policy using themself a
>> relay domain ::
>>
>> 24BDEE7918: to=<donna at go4extreme.com>,
>> relay=smtp1.msp.securence.com[216.17.3.48]:25, delay=3.3,
>> delays=0.02/0.01/1.2/2.1, dsn=2.0.0, status=sent (250 OK, queued as
>> <20070429143657.24BDEE7918@
>>
>> How can I deny these mails, and deny use of another relay ?
>>     
>
> It would help if you told us how you have configured it at the moment.
> What have you done to prevent unauthorised relaying?
>
> output from "postconf -n" will help enormously.
>
> Regards
>
> Stuart
> - --
> Stuart Sears RHCA RHCSS PDF ODT DUI
> "The PM's claims on this subject are not exactly lies, so much as
> fact-free."
> http://www.no2id.net/news/pressRelease/release.php?name=Blair_Fact-Free
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