Postfix cannot send email toYahoo mail(Relay access denied)

Hi, I am a newbie and I am trying to setup an email server at home to send email to my yahoo email address but I am getting follwing error
thanks in advance

Error Msg==========
Your message did not reach some or all of the intended recipients.

Subject: RE: Microsoft Outlook Test Message
Sent: 5/14/2009 10:29 PM

The following recipient(s) could not be reached:

'Myyahoomail@yahoo.com' on 5/14/2009 10:29 PM
554 5.7.1 <Myyahoomail@yahoo.com>: Relay access denied
End Of error message=========


I followd following HOW TO install and postfix
Current version of linux is centos 5.3
http://www.howtoforge.com/perfect-server-centos-5.2-p5

Additional information:
Send and receive from local users is working abd even I am able to recieve email from my Myyahoomail@yahoo.com email addres.
FYI I do have port forwarding enabled for Port 25 and 110 on my router,
My IPS is www.rogers.com and I am located in markham Ontario Canada.
My Ipconfig in windows cmd prompt displays following
Windows IP Configuration

Host Name . . . . . . . . . . . . : Myname-home
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : phub.net.cable.rogers.com

Ethernet adapter Local Area Connection 2:
Connection-specific DNS Suffix . : phub.net.cable.rogers.com
Description . . . . . . . . . . . : NVIDIA nForce Networking Controller
Physical Address. . . . . . . . . : 00-17-31-E2-9A-92
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.197
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
Lease Obtained. . . . . . . . . . : Thursday, May 14, 2009 2:02:45 PM
Lease Expires . . . . . . . . . . : Friday, May 15, 2009 2:02:45 PM






my main.cf file

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
home_mailbox = Maildir/
html_directory = no
inet_interfaces = all
mail_owner = postfix
mailbox_command =
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
myhostname = promptconstructions.no-ip.org
mynetworks = 127.0.0.0/8
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
sample_directory = /usr/share/doc/postfix-2.3.3/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtp_tls_note_starttls_offer = yes
smtp_use_tls = yes
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject _unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous
smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt
smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom
unknown_local_recipient_reject_code = 550



maillog content
May 14 15:40:52 promptconstructions postfix/anvil[6888]: statistics: max cache size 1 at May 14 15:36:23
May 14 22:23:56 promptconstructions dovecot: pop3-login: Login: user=<sample_user>, method=PLAIN, rip=::ffff:174.112.163.248, lip=::ffff:192.168.0.193
May 14 22:23:56 promptconstructions dovecot: POP3(sample_user): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
May 14 22:24:46 promptconstructions postfix/smtpd[7784]: connect from web88205.mail.re2.yahoo.com[206.190.37.220]
May 14 22:24:46 promptconstructions postfix/smtpd[7784]: 4570C53DC63: client=web88205.mail.re2.yahoo.com[206.190.37.220]
May 14 22:24:46 promptconstructions postfix/cleanup[7788]: 4570C53DC63: message-id=<463387.49379.qm@web88205.mail.re2.yahoo.com>
May 14 22:24:46 promptconstructions postfix/qmgr[6834]: 4570C53DC63: from=<sahar_ca@yahoo.com>, size=8261, nrcpt=1 (queue active)
May 14 22:24:46 promptconstructions postfix/smtpd[7784]: disconnect from web88205.mail.re2.yahoo.com[206.190.37.220]
May 14 22:24:46 promptconstructions postfix/local[7789]: 4570C53DC63: to=<sample_user@promptconstructions.no-ip.org>, relay=local, delay=0.45, delays=0.34/0.06/0/0.05, dsn=2.0.0, status=sent (delivered to maildir)
May 14 22:24:46 promptconstructions postfix/qmgr[6834]: 4570C53DC63: removed
May 14 22:25:04 promptconstructions dovecot: pop3-login: Login: user=<sample_user>, method=PLAIN, rip=::ffff:174.112.163.248, lip=::ffff:192.168.0.193
May 14 22:25:06 promptconstructions dovecot: POP3(sample_user): Disconnected: Logged out top=0/0, retr=1/8411, del=1/1, size=8394
May 14 22:28:06 promptconstructions postfix/anvil[7786]: statistics: max connection rate 1/60s for (smtp:206.190.37.220) at May 14 22:24:46
May 14 22:28:06 promptconstructions postfix/anvil[7786]: statistics: max connection count 1 for (smtp:206.190.37.220) at May 14 22:24:46
May 14 22:28:06 promptconstructions postfix/anvil[7786]: statistics: max cache size 1 at May 14 22:24:46
May 14 22:29:13 promptconstructions postfix/smtpd[7836]: connect from CPE001e58295ec2-CM000a73a99ee2.cpe.net.cable.rogers.com[174.112.163.248]
May 14 22:29:13 promptconstructions postfix/smtpd[7836]: NOQUEUE: reject: RCPT from CPE001e58295ec2-CM000a73a99ee2.cpe.net.cable.rogers.com[174.112.163.248]: 554 5.7.1 <Myyahoomail@yahoo.com>: Relay access denied; from=<sample_user@promptconstructions.no-ip.org> to=<Myyahoomail@yahoo.com> proto=ESMTP helo=<farhanhome>
May 14 22:29:13 promptconstructions postfix/smtpd[7836]: 6618153DC63: client=CPE001e58295ec2-CM000a73a99ee2.cpe.net.cable.rogers.com[174.112.163.248]
May 14 22:29:13 promptconstructions postfix/cleanup[7840]: 6618153DC63: message-id=<0C3AA9C029704E1082C8A89CB0D61D26@Myhome>
May 14 22:29:13 promptconstructions postfix/qmgr[6834]: 6618153DC63: from=<sample_user@promptconstructions.no-ip.org>, size=1612, nrcpt=2 (queue active)
May 14 22:29:13 promptconstructions postfix/local[7841]: 6618153DC63: to=<sample_user@promptconstructions.no-ip.org>, relay=local, delay=0.07, delays=0.02/0.01/0/0.04, dsn=2.0.0, status=sent (delivered to maildir)
May 14 22:29:13 promptconstructions postfix/local[7842]: 6618153DC63: to=<user1@promptconstructions.no-ip.org>, relay=local, delay=0.07, delays=0.02/0.02/0/0.03, dsn=2.0.0, status=sent (delivered to maildir)
May 14 22:29:13 promptconstructions postfix/qmgr[6834]: 6618153DC63: removed
May 14 22:29:16 promptconstructions postfix/smtpd[7836]: disconnect from CPE001e58295ec2-CM000a73a99ee2.cpe.net.cable.rogers.com[174.112.163.248]
May 14 22:32:36 promptconstructions postfix/anvil[7838]: statistics: max connection rate 1/60s for (smtp:174.112.163.248) at May 14 22:29:13
May 14 22:32:36 promptconstructions postfix/anvil[7838]: statistics: max connection count 1 for (smtp:174.112.163.248) at May 14 22:29:13
May 14 22:32:36 promptconstructions postfix/anvil[7838]: statistics: max cache size 1 at May 14 22:29:13

Nothing in your logs springs to mind, but the "Message Rejected" because of "Relaying" permissions indicate that you are not authenticated nor sending a message to a domain that the server hosts.

The server itself will not normally relay a message unless you are authenticated. This is kinda obvious, but in case the lingo (for other readers) isn't clear, then this is how it works:

A mail server will sit and wait for e-mail to arrive. Once it does, it assesses whether it is destined for it or not (i.e. the part after the "@" symbol). If it is, it accepts it (more-or-less) unconditionally.

If the mail in question is not for it then it will check whether the person who sent it is authenticated and if they are, it will relay it on. If they are not authenticated then it will reject it outright - as it should. Spammers frequently use open relays to send their crap.

I know that PostFix is a common e-mail server platform, but if you use Exim4 then I can make custom configuration files for you to get you up and running. It's all I use and is ridiculously powerful. I have successfully generated the same message 30,000 times over to flood a particular annoying ex-girlfriend's inbox with to get the message across and the system generated it with no questions asked. It was fun.

Still, I have done a lot of work with Exim4 that includes MySQL lookups for users and I intend on expanding it once I have the latest issues ironed out.

Good luck!

James

Hi Satanic Atheist.
Thanks for your reply I am open to use any email server ,
so if you can help me on eximp please refer the download/installation/configuration instruction for eximp and how can I remove postfix from my system including all the configuration files.Then I will install eximp and request you to provide the configurations and we will go from there.

I am also running Mysql as database.

Once again thanks for coming forward to help me out.

Don't just bail on postfix or whatever Linux app you are using. You will never learn if you just bail out. Postfix should work perfectly fine. It has to be some sort of configuration issue. Do you have your hostname and domain setup on your computer correctly? Yahoo mail will not accept mail if it does not know what domain you are sending from. I think there is a mail-relay setting in the postfix conf file somewhere also. Make sure that is off. Not sure what level you are at..but doing a
dig mx [yourdomain]
might give you some more answers and also check your /var/log/mail/mail.errors or whatever area to look for log errors that bounce back and try to google and troubleshoot those.

Just quitting the mission in Linux doesn't really help you learn stuff. It just avoids the problem, and that's not going to really help you in working with Linux in the future.

Quote:

---

CM000a73a99ee2.cpe.net.cable.rogers.com[174.112.163.248]: 554 5.7.1 <Myyahoomail@yahoo.com>: Relay access denied; from=<sample_user@promptconstructions.no-ip.org> to=<Myyahoomail@yahoo.com> proto=ESMTP helo=<farhanhome>

---

Try setting postfix up to authenticate and use your ragers cable SMTP for outgoing email. Some providers don't allow 'personal' mail servers and require email to go through their servers or not at all. It's a spam fighting thing.
I personally use my gmail account to forward emails off my home network using SSMTP since I only have a need for sending email and not receiving it. you have several options but postfix and ssmtp are probably what you want to focus on. http://google.com/linux is a good resource I use often for things like this.

Not sure about Yahoo! accounts, but some mailservers reject e-mail from ADSL connections and dynamic IPs because of the Spam problems. I use my own mailserver and it works perfectly. I've never had an e-mail rejected because it's on ADSL but I don't send mail to Yahoo! accounts that often.

For sparkles34 - I'm not advocating one package over another and your argument is correct but since sahar ca stated that he only wants a mailserver to run from home, I offered to help someone write a decent configuration file that will not be used as an open relay for sending Spam.

sahar ca if you send me a PM with your e-mail address, I will type up the packages that I have installed and you can send me your required configuration. Once you've installed it (it's quite a lot so set aside 2-3 hours) and proven that it's working then you can do the full SpamAssassin, ClamAV and other stuff to make it as robust as hell. I will NEVER see a virus appear in my inbox because of Clam and SpamAssassin is exceptional at classifying e-mail as Spam or not once it gets going.

I will also advise you to study the configuration to work out how it works but always keep a backup!

Anyway, until you PM me, I'll sit tight.

James