[aklug] Re: Postfix and acs

Kevin, found what will get ya (at least your emails) moving:
http://www.cyberciti.biz/tips/howto-postfix-masquerade-change-email-mail-address.html
or http://goo.gl/Q2KvS

-Sean

On 04/07/2012 12:21 PM, bdk wrote:
> ACS will allow relaying from their IP address space regardless of the
> MAIL FROM address provided it is a valid route-able domain so in the
> case that an NDR does need to be sent to the originator, it can get
> delivered.
>
> ACS doesn't block ports for users by default. If you end up getting
> quarantined for having an infected or malicious host on your system then
> that is different and ports are blocked until the owner can remedy the
> situation.
>
> Kevin, you don't need to use outbound SMTP authentication. Maybe Postfix
> is trying first without and succeeding which is good.
>
> There should be an option within Postfix that will mutate the FROM
> locally routable address to something that will play well with servers
> not on your network. I don't use Postfix on my network but I suspect
> that that is what you'll need to look for.
>
> Wether you relay (smart-host?) through ACS or you choose to act as an
> MTA and send directly, you'll need a valid return address on the email.
>
> HTH.
>
> -Sean
>
> On 04/07/2012 12:12 PM, Damien Hull wrote:
>> Here's my two cents....
>>
>> 1. ACS may not allow you to "relay" mail through their server.
>> 2. I think ACS blocks a few ports so users can't setup servers.
>>
>> It's been my observation that most people think email is a simple
>> service. You install an email server and it should send email, right?
>> Wrong! You have to make sure several things are working.
>>
>> 1. DNS - you have a domain and mx record
>> 2. Your email server is properly configured
>> 3. Backup or secondary mail server with secondary MX records...
>>
>> It is possible to setup an email server without a real domain name.
>> However, you can't send email through another server unless they allow
>> you to do so.
>>
>> Try this....
>> 1. configure Postfix to send email - no relay option
>> 2. configure roots mail to send everything to your ACS email account
>>
>>
>>
>> On Apr 7, 2012, at 11:49 AM, Kevin Miller <atftb2@alaska.net> wrote:
>>
>>> I'm trying to configure my linux box (openSUSE 11.4) running postfix to
>>> relay mail through smtp.acsalaska.net (acsalaska.net being my ISP of
>>> course).
>>>
>>> I googled around and followed some directions on the web, changing the
>>> first line below to yes (was set to no) and added the 2nd two lines.
>>>
>>> smtp_sasl_auth_enable = yes
>>> smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
>>> smtp_sasl_security_options =
>>>
>>> In /etc/postfix/sasl_passwd I have this entry:
>>> acsalaska.net USER:PASSWORD
>>> (where USER:PASSWORD are my account credentials, not literally USER &
>>> PASSWORD of course)
>>>
>>> When I send, this is the output in /var/log/mail
>>>
>>> Apr 7 11:37:23 orca postfix/pickup[7256]: CAA50A2F80: uid=0 from=<root>
>>> Apr 7 11:37:23 orca postfix/cleanup[8446]: CAA50A2F80:
>>> message-id=<20120407193723.CAA50A2F80@orca.mmc>
>>> Apr 7 11:37:23 orca postfix/qmgr[7404]: CAA50A2F80:
>>> from=<root@orca.mmc>, size=417, nrcpt=1 (queue active)
>>> Apr 7 11:37:24 orca postfix/smtp[8448]: CAA50A2F80:
>>> to=<atftb2@alaska.net>,
>>> relay=smtpgate.acsalaska.net[209.112.168.120]:25, delay=0.83,
>>> delays=0.11/0.01/0.5/0.2, dsn=5.1.8, status=bounced (host
>>> smtpgate.acsalaska.net[209.112.168.120] said: 553 5.1.8
>>> <atftb2@alaska.net>... Domain of sender address root@orca.mmc does not
>>> exist (in reply to RCPT TO command))
>>> Apr 7 11:37:24 orca postfix/cleanup[8446]: A409BA3009:
>>> message-id=<20120407193724.A409BA3009@orca.mmc>
>>> Apr 7 11:37:24 orca postfix/qmgr[7404]: A409BA3009: from=<>, size=2302,
>>> nrcpt=1 (queue active)
>>> Apr 7 11:37:24 orca postfix/bounce[8449]: CAA50A2F80: sender
>>> non-delivery notification: A409BA3009
>>> Apr 7 11:37:24 orca postfix/qmgr[7404]: CAA50A2F80: removed
>>> Apr 7 11:37:24 orca postfix/local[8450]: A409BA3009:
>>> to=<root@orca.mmc>, relay=local, delay=0.11, delays=0.05/0.03/0/0.04,
>>> dsn=2.0.0, status=sent (delivered to mailbox)
>>> Apr 7 11:37:24 orca postfix/qmgr[7404]: A409BA3009: removed
>>>
>>>
>>> It's failing on the "domain of sender address does not exist).
>>> Obviously my home box doesn't isn't an acsalaska.net controlled box so
>>> the hostname.domain are purely local. I should be connecting through a
>>> NATted address via the DSL router however, so I was hoping that the
>>> relay would be allowed due to it being a trusted network.
>>>
>>> What do I need to do to get local mail relayed through acsalaska.net -
>>> I'd like to have a messages to root@localhost and/or my normal user
>>> account on localhost routed to my acsalaska.net email, and maybe send a
>>> message from the command line to others now and then.
>>>
>>> I'm not planning on receiving any mail on this box. I'm just trying to
>>> figure out how to send from it.
>>>
>>> Thanks...
>>>
>>> ...Kevin
>>> --
>>> Kevin Miller - http://www.alaska.net/~atftb
>>> Juneau, Alaska
>>> In a recent survey, 7 out of 10 hard drives preferred Linux
>>> Registered Linux User No: 307357, http://linuxcounter.net
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Received on Sat Apr 7 12:28:29 2012