Postfix - antispam and relay package

marcelloc · May 25, 2012, 3:17 PM

The problem is that /var is ram drive and /usr is read only on nanobsd.

you can symlink postfix folder to /usr but you will need to leave /usr writable all the time.

fogelholk · May 25, 2012, 3:40 PM

The problem is that /var is ram drive and /usr is read only on nanobsd.

you can symlink postfix folder to /usr but you will need to leave /usr writable all the time.

Alright, thanks for your answer.

Would it be possible to give it more ram or increase the size of /var or something? The tiny beast has 2GB of total ram, and currently about 11% in use.

nahid · May 26, 2012, 12:08 AM

Marcello,

My SMTP Test report as follows:
EHLO please-read-policy.mxtoolbox.com
250-firewall.sesric.org
250-PIPELINING
250-SIZE 10240000
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN [187 ms]
MAIL FROM: supertool@mxtoolbox.com250 2.1.0 Ok [203 ms]
RCPT TO: test@example.com554 5.7.1 test@example.com: Relay access denied [187 ms]
QUIT
221 2.0.0 Bye [203 ms]

I want to convert the local address (red marked) to mail2.sesric.org.
Is there any way to solve this.

Best regards,
Nahid/test@example.com /test@example.com /supertool@mxtoolbox.com

marcelloc · May 26, 2012, 2:19 AM

Nahid,

I think you just need to add

myhostname=mail2.sesric.org
smtp_helo_name=mail2.sesric.org

to genereal -> custom main.cf options

att,
Marcello Coutinho

nahid · May 26, 2012, 9:09 AM

Mercello,

In that case I got the following log that shows the messages were bounced and it doesn't deliver.

May 26 12:10:19 nahid05@gmail.com anhuda@sesric.org 0.63 bounced (mail for [10.10.1.5] loops back to myself)
May 26 12:09:23 nashanahid@yahoo.com anhuda@sesric.org 0.69 bounced (mail for [10.10.1.5] loops back to myself)

Best regards,
Nahid

RobinGill · May 27, 2012, 8:14 PM

@marcelloc:

RobinGill,

all working now? I was trying to reproduce your no valid recipients check you've posted today.
The reinstall did the trick?

att,
Marcello Coutinho

Hi Marcello,

Yes it's all working now that I've reinstalled. Strange thing is I tried a few times until I got it working. If I can figure out how to reproduce the problem I had I will let you know.

Also it's no major deal, but I'm wondering if on the next update it may be worth modifying the package to add quote marks to allow ldap authentication with a username with a space in it. I tried adding the quote marks in the gui but they are automatically removed.

marcelloc · May 27, 2012, 11:01 PM

@RobinGill:

but I'm wondering if on the next update it may be worth modifying the package to add quote marks to allow ldap authentication with a username with a space in it. I tried adding the quote marks in the gui but they are automatically removed.

I leave only letters and number to avoid code on the field.

nahid · May 28, 2012, 6:37 AM

"Mercello,

In that case I got the following log that shows the messages were bounced and it doesn't deliver.

May 26 12:10:19 nahid05@gmail.com anhuda@sesric.org 0.63 bounced (mail for [10.10.1.5] loops back to myself)
May 26 12:09:23 nashanahid@yahoo.com anhuda@sesric.org 0.69 bounced (mail for [10.10.1.5] loops back to myself)

Best regards,
Nahid"

Marcello,

Is there any way to solve this?

Nahid

zlyzwy · May 28, 2012, 7:48 AM

Hi Marcelloc,

I have one question, some mail server is continuing sending spam email to my server.
It brings me a lot of useless log in Search Mail(NOQUEUE).

May 28 15:41:58	xxx@xxx.com	aaa@aaa.cn	reject
May 28 15:42:58	xxx@xxx.com	aaa@aaa.cn	reject
May 28 15:43:58	xxx@xxx.com	aaa@aaa.cn	reject
May 28 15:44:58	xxx@xxx.com	aaa@aaa.cn	reject
May 28 15:45:58	xxx@xxx.com	aaa@aaa.cn	reject
May 28 15:46:58	xxx@xxx.com	aaa@aaa.cn	reject
May 28 15:47:58	xxx@xxx.com	aaa@aaa.cn	reject

I add the rule in Access List –> Sender

xxx@xxx.com RJECT
bbb.com REJECT

But I found I still can see these log in Search Mail.

Can I just block these mail address somewhere? Or maybe there will have a filter for log?

Thanks for your great work!
Zlyzwy

marcelloc · May 28, 2012, 3:16 PM

The noqueue log means that the message was rejected before mail data.

To do not receive this error, you will need to configure a firewall rule for these ips.

att,
Marcello Coutinho

zlyzwy · May 29, 2012, 12:32 AM

@marcelloc:

The noqueue log means that the message was rejected before mail data.

To do not receive this error, you will need to configure a firewall rule for these ips.

att,
Marcello Coutinho

In fact, I has tried this method already, however it seems it doesn't work.
I have pfBlocker installed, I put the spam ip into the Custom list, eg:

111.222.333.444/32  #xxx@xxx.com

Then I still see the NOQUEUE log…

marcelloc · May 29, 2012, 3:54 AM

@zlyzwy:

In fact, I has tried this method already, however it seems it doesn't work.
I have pfBlocker installed, I put the spam ip into the Custom list, eg:
111.222.333.444/32 #xxx@xxx.com

can you check on diagnostics table if this ip is listed on pfblocker alias?
what action did you selected on pfblocker?

pfBlocker is a nice package ;), but for this rule, you need just an alias and a rule on wan.

att,
Marcello Coutinho

zlyzwy · May 29, 2012, 5:17 AM

can you check on diagnostics table if this ip is listed on pfblocker alias?

Yes, it's.

what action did you selected on pfblocker?

Deny Inbound

I can see the packets which has been blocked by PFblocker from Dashboard..

marcelloc · May 30, 2012, 2:11 AM

Check the log, it may be coming from more than one ip.

zlyzwy · May 30, 2012, 12:36 AM

@marcelloc:

Check the log, it maybe comming from more then one ip.

You are right… there are three ips from one address.

I blocked them all and it's now OK~

Thanks for your help~

ics · May 31, 2012, 2:26 PM

Hi,

In Postfix, is it possible to forward emails to specific servers depending on the recipient email address (not only on the domain) ?

Thank you

marcelloc · May 31, 2012, 4:00 PM

not yet. :(

zlyzwy · Jun 19, 2012, 11:26 AM

Hi Marcelloc,

Can I add the NOQUEUE email address to Whitelist?
Some of mail server can't pass 'Helo Hostname' check….

As my understanding, the "access lists" will only work with QUEUE email address.

Thanks in advance~

Zlyzwy

marcelloc · Jun 19, 2012, 8:31 PM

The noqueue info in log file are for messages that failed during header check.

to workaround it,you can:

unselect the helo check on config gui
add the host hello info to /etc/hosts (check if pfsense boot process does not clean this file)
if you really trust the remote domain, add it to mynetworks.

But the best way is to ask remote site admin to fix his smtp configuration.

ics · Jun 29, 2012, 7:47 AM

Hi,

In Search Mail some emails have status "sent" even if it's detected as spam (maillog).
And for some other emails status "spam" is obviously correct. :)

Any explanation ?

Another question :
the subject displayed is the original subject of the email. Is it possible to view the modified subject also ?

Thanks