I can send mail from SquirrelMail via the local IP on the box of course, so Postfix is pulling mynetworks, but I also have a remote IP set in mynetworks, and it's not paying any attention to that one. So I can only send mail from SquirrleMail, but no Thunderbird via a remote static IP.

Can anyone tell me what I screwed up in my config?

Error: postfix "Relay access denied"

Config File:

command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, teravox.net,mail.teravox.net
unknown_local_recipient_reject_code = 550
mynetworks_style = class

#the first IP is the remote IP I need to send mail from

mynetworks = 66.63.178.226/28, 127.0.0.0/8, 67.215.245.72/29, 172.16.45.192/26

alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
debug_peer_level = 2
debugger_command =
PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
xxgdb $daemon_directory/$process_name $process_id & sleep 5
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.3.3/samples
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
myorigin = teravox.net
broken_sasl_auth_clients = yes
smtpd_delay_reject = no
myhostname = mail.teravox.net
mynetworks = teravox.net
allow_untrusted_routing = yes
smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated permit_inet_interfaces check_relay_domains

Mynetworks_style has no effect if you specify mynetworks, so comment that out for a start.

Can you please show the log messages of the error.

Sure Asterisk added to protect the privacy of the receiver, but otherwise this is exactly what I get.

May 25 19:16:01 www1 postfix/smtpd[20302]: connect from unknown[66.63.178.226]
May 25 19:16:02 www1 postfix/smtpd[20302]: warning: support for restriction "check_relay_domains" will be removed from Postfix; use "reject_unauth_destination" instead
May 25 19:16:02 www1 postfix/smtpd[20302]: NOQUEUE: reject: RCPT from unknown[66.63.178.226]: 554 5.7.1 <kyle@*****consulting.biz>: Recipient address rejected: Relay access denied; from=<tech@teravox.net> to=<kyle@*****consulting.biz> proto=ESMTP helo=<[67.215.245.78]>
May 25 19:16:03 www1 postfix/smtpd[20302]: disconnect from unknown[66.63.178.226]

Looks OK (but obviously isn't), but an you try

mynetworks = 66.63.178.226, 127.0.0.0/8, 67.215.245.72/29, 172.16.45.192/26

ie without the netmask.

Also, fix your recipient restrictions as per the log you posted to avoid the warning.

Did you just move an old main.cf to a new box?

I made those changes, and got the same error, minus the warning to change the variable. Where else could I look for a solution to this issue?

And no, this is a fairly fresh install, why do you ask?

Hang on - you have a second mynetworks line there

Edit - looks like we're posting on top of each other here.

Because you have a depreciated option in your config

Well now I feel like a retard, but that was it. Works fine now. Much appreciated.

For future reference, as look at "postconf -n" would have shown this up quite nicely.