Postfix isn't working right on my (port 25 blocked) connection

[bagpiperdude90]

Hey,

Ok - long story short, I'm a small web designer, and I end up hosting most of my clients sites on my Fedora 6 server, running ISPConfig and Postfix.

Right now, if they need email, I just sign them up with google's apps for your domain service, which provides free email domain hosting. Works great, until now... I have two clients; one wants a PHPbb forum, and the other wants Zen cart. Both *need* emails to be able to be sent from the website via PHP scripts. I want to be able to use their domain name, (i.e. Sales@domain.com, instead of StoreName@hotmail.com). Simple - just use Postfix.

Well, I have another problem. I'm on a Bellsouth DSL connection, with port 25 blocked. I've talked with them, and threatened to leave, and they won't unblock port 25.

Supposedly, I can authenticate all my outgoing mail through my ISP's email servers, because my gmail account can send outgoing just fine. So, connecting the dots, you'd think I would be able to send my domain.com email through their mailservers, right? People have told me I can...

Could anybody do me a BIG favor, and let me know how to do this, or link me to some tutorials? I'll make a fresh install of any distro you want, and install whatever packages, and follow any directions. I have a spare server to use. I don't care if its postfix or sendmail at this point - I just want something to work, so I can see that it does work and how it does work.

FYI: ISP is bellsouth, so mailservers are mail.bellsouth.net.

Thank you very very very much for any replies!

[Hans]

Hi,

This thread could be very interesting for you:
http://www.howtoforge.com/forums/showthread.php?t=13556

[bagpiperdude90]

wow, most entertaining thread in a while! Sends me in circles...

Check the link... you linked to this one ;-)

Thanks for replying though!

[aqua]

Thistut by falko is what you need.

http://www.howtoforge.com/postfix_re...her_mailserver

Make sure that your php forums *actually* use your postfix. most of them default to trying to send out mail on their own, which is as you found out, blocked.

aqua

[bagpiperdude90]

ah! ok thanks!

[bagpiperdude90]

Well, I followed the directions... here's what I got back...

This is the mail system at host localhost.localdomain.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

Next is this:

<********@gmail.com>: host mx00.mail.bellsouth.net[205.152.58.32] said:
550 #5.1.0 Address rejected. (in reply to RCPT TO command)

Or this:

<********@gmail.com>: host mx01.mail.bellsouth.net[205.152.58.33] said:
550 relaying mail to gmail.com is not allowed (in reply to RCPT TO command)

Continues:

Reporting-MTA: dns; localhost.localdomain
X-Postfix-Queue-ID: 6F58E14C8320
X-Postfix-Sender: rfc822; admin@[mydomain].com
Arrival-Date: Wed, 20 Jun 2007 22:57:32 -0400 (EDT)

Final-Recipient: rfc822; ********@gmail.com
Original-Recipient: rfc822;**********@gmail.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx00.mail.bellsouth.net
Diagnostic-Code: smtp; 550 #5.1.0 Address rejected.

I'll look around to see what's going on.

[bagpiperdude90]

Funny thing is... it works if I send it to the bellsouth.net address I'm SMTP-AUTHing with.

[bagpiperdude90]

hmm... maybe bellsouth.net doesn't even require SMTP-AUTH? I can enter this into console: (reply is in quotes, my commands are in non-quotes)

[root@localhost]# telnet mail.bellsouth.net 25

Trying 205.152.59.16...
Connected to mail.bellsouth.net.
Escape character is '^]'.
220 ibm69aec.bellsouth.net ESMTP server ready Wed, Jun 20, 2007 23:43:20 -0400

EHLO

250-ibm69aec.bellsouth.net
250-HELP
250-PIPELINING
250-DSN
250-8BITMIME
250 SIZE 26214400

quit

221 ibm69aec.bellsouth.net ESMTP server closing connection
Connection closed by foreign host.

Didn't ask for Authentication. Does that mean I don't need SMTP-AUTH?

I'm so confused...


EDIT -

So, I turned off SMTP-AUTH by doing this:

"
postconf -e 'relayhost = mail.bellsouth.net'
postconf -e 'smtp_sasl_auth_enable = no'
"

And tried sending mail. I can still connect... but I get the same old "Diagnostic-Code: smtp; 550 #5.1.0 Address rejected." thing.

Grrrr.

Appreciate any help... :-)

[bagpiperdude90]

IT WORKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2 months later... finally!

Thanks for sending me that link... turns out all I had to do was:

edit my /etc/postfix/main.cf file, and add:

"
relayhost = [mail.bellsouth.net]
"
Then of course, restarting postfix.

It needed those darned brackets. No SMTP-AUTH needed. Just takes it as I send it. Dang.

I assume that was the same as saying:

"
postconf -e 'relayhost = [mail.bellsouth.net]'
"


Man. Finally. Thanks for all the help, people! I'm one happy camper now :-)