Postfix - antispam and relay package
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it will on Pfsense 2.3 when pbi will not be used to package binaries.
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For purpose of testing, i have installed the package on a dédicated Pfsense (this mean : not my firewall). This package seems to be a geat job.
Today my "production" smtp relays are manuelly maintened. I decided to test this package.
First surprise is main.cf generated par the GUI.# Allow connections from specified local clients and strong check everybody else. smtpd_client_restrictions = permit_mynetworks, reject_unauth_destination, check_client_access pcre:/usr/pbi/postfix-amd64/etc/postfix/cal_pcre, check_client_access cidr:/usr/pbi/postfix-amd64/etc/postfix/cal_cidr, reject_unknown_client_hostname, reject_unauth_pipelining, reject_multi_recipient_bounce, permit smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination, reject_unauth_pipelining, check_client_access pcre:/usr/pbi/postfix-amd64/etc/postfix/cal_pcre, check_client_access cidr:/usr/pbi/postfix-amd64/etc/postfix/cal_cidr, check_sender_access hash:/usr/pbi/postfix-amd64/etc/postfix/sender_access, reject_non_fqdn_helo_hostname, reject_unknown_recipient_domain, reject_non_fqdn_recipient, reject_multi_recipient_bounce, reject_unverified_recipient, reject_spf_invalid_sender, permitTwo times "smtpd_recipient_restrictions".
I also notice in the GUI, there is no way for a flat list for clients restriction.
And sender access list is use with smtpd_sender_restrictions.At this time (others smtp Postfix relay), i manage 3 differents flat lists for :
smtpd_client_restrictions
smtpd_hello_restrictions
smtpd_sender_restrictionsThere is also specifics lists for cidr and PCRE.
Pfsense 2.1.5 and last version of package. Something wrong with my setup.
So i'm a little bit confused the way main.cf is generated from the GUI. Even if I know Postfix can use each list in many restrictions.
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Two times "smtpd_recipient_restrictions".
Are you sure, the post shows smtpd__clientrestrictions and smtpdrecipient__restrictions
Pfsense 2.1.5 and last version of package. Something wrong with my setup.
Better using on 2.2 with manual fixes above.
So i'm a little bit confused the way main.cf is generated from the GUI. Even if I know Postfix can use each list in many restrictions.
Can you explain it better? You mean you know a better config setup to implement on this package?
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Having an issue.
Since I cannot seem to install the LDAP plugin in any way or form (or even find it somewhere..) I can not get a link to Exchange to import a list of valid e-mail accounts.
Is there a way to edit Postfix (used in combination with mailscanner) to allow all e-mail accounts from a domain?This is not used as an internal relay, just external anti-spam checking.
yes, I know this lowers the security quit a bit. But having everything blocked now with the same recipient error is the other side of the coin.
I really would just like to the the LDAP connection working. But installing the pkg like by the manual gives an error it cannot be found. And I cannot seem to source it anywhere else.
Did anyone manage to install it somehow?2.1.5 x64 setup.
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Having an issue.
Since I cannot seem to install the LDAP plugin in any way or form
Did you tried```
pkg add p5-perl-ldap -
pkg_add pR5-perl-ldap pkg_add: can't stat package file "pR5-perl-ldap"that or cannot find package.
Tried your private hosted version from 2012. gives more errors then someone dyslexic quoting Nietzsche.
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Yeah, perhaps you could fix your copy/paste skills. Noone told you to install nonsense like pR5-perl-ldap.
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Reposting update guide for pfsense 2.2.x only:
Install package via gui
execute code below via console/sshfetch -o /usr/local/www/postfix.php http://e-sac.siteseguro.ws/px22/postfix.txt fetch -o /usr/local/www/widgets/widgets/postfix.widget.php http://e-sac.siteseguro.ws/px22/postfix.widget.txt pbi_delete postfix-2.11.3_2-amd64 rm -f /usr/pbi/bin/libexec/postfix rm -f /usr/local/etc/postfix rm -f /var/spool/postfix rm -f /var/mail/postfix rm -f /var/db/postfix pkg install postfixfix postfix.inc file with this patch via system patcher package
add this patch via package system patcher
**description:**postfix_inc
patch:--- postfix.orig.inc 2015-08-18 08:15:00.000000000 +0000 +++ postfix.inc 2015-08-18 08:18:10.000000000 +0000 @@ -36,11 +36,11 @@ require_once("globals.inc"); $pfs_version = substr(trim(file_get_contents("/etc/version")),0,3); -if ($pfs_version == "2.1" || $pfs_version == "2.2") { - define('POSTFIX_LOCALBASE', '/usr/pbi/postfix-' . php_uname("m")); -} else { +//if ($pfs_version == "2.1" || $pfs_version == "2.2") { +// define('POSTFIX_LOCALBASE', '/usr/pbi/postfix-' . php_uname("m")); +//} else { define('POSTFIX_LOCALBASE','/usr/local'); -} +//} $uname=posix_uname(); if ($uname['machine']=='amd64')directory:/usr/local/pkg/
Hi,
thank you for the manual fix. I have tried several times , believing i screwed up somewhere, but still no white smoke . The error messages stay the same.
Does anyone have more suggestions in this ? The setup is a carp unit, with a 2.1.4 install upgraded to 2.1.5 and now jumped to 2.2.4 .Thank you in advance..
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Hi.
In case someone needs to specify a port in domain forwarding, here is a patch for /usr/local/pkg/postfix.inc:
--- postfix.inc.org 2015-10-29 13:59:12.000000000 +0300 +++ postfix.inc 2015-10-29 14:19:36.000000000 +0300 @@ -263,10 +263,17 @@ if (is_array($postfix_domains['row'])) { foreach ($postfix_domains['row'] as $postfix_row) { $relay_domains .= ' ' . $postfix_row['domain']; - if (!empty($postfix_row['mailserverip'])) - $transport .= $postfix_row['domain'] . " smtp:[" . $postfix_row['mailserverip'] . "]\n"; + if (!empty($postfix_row['mailserverip'])) { + if (strrpos($postfix_row['mailserverip'], ":") === false) { + $transport .= $postfix_row['domain'] . " smtp:[" . $postfix_row['mailserverip'] . "]\n"; + } + else { + list($t_ip, $t_port) = explode(":", $postfix_row['mailserverip']); + $transport .= $postfix_row['domain'] . " smtp:[" . $t_ip . "]:" . "$t_port\n"; } } + } + } #check cron check_cron(); #check logging @@ -787,8 +794,15 @@ } else if (substr($key, 0, 12) == "mailserverip" && is_numeric(substr($key, 12))) { if (empty($post['domain' . substr($key, 12)])) $input_errors[] = "Domain for {$value} cannot be blank."; - if (!is_ipaddr($value) && !is_hostname($value)) - $input_errors[] = "{$value} is not a valid IP address or host name."; + if (strrpos($value, ":") === false) { + if (!is_ipaddr($value) && !is_hostname($value)) + $input_errors[] = "{$value} is not a valid IP address or host name."; + } + else { + list($t_ip, $t_port) = explode(":", $value); + if (!is_ipaddr($t_ip) && !is_hostname($t_ip)) + $input_errors[] = "{$value} is not a valid IP address or host name."; + } } } }
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We are running Postfix with the patches and all seems to be fine… HOWEVER, we seem to be seeing a couple of issues...
1: I see no way of using DNS block lists like dbl.spamhaus.org (which only accept domain names, not IP addresses).
I have tried adding the option smtpd_client_restrictions=reject_rhsbl_client dbl.spamhaus.org on the general page under custom main.cf options. When I add it, I get a lot of log entries about it replacing existing smtpd_client_restrictions=reject_rhsbl_client lines.
Does not seem to work.
Suggestion: I notice you are parsing for the "," when you are saving the list to the reject_rbl_client directive. Can you add something to parse for another character like ":DNS" to put the entry in the reject_rhsbl_client directive?
Or even add a box on the antispam page for DNS Block lists?2: We have some custom ACL headers that we scan for like /^From:.@.download/ REJECT that seem to work great, but once in a while a couple of the messages get through :P Ideas?
3: On the Access list page Helo box, no matter what we put there it does not reject. Like trying to block the .download domain from even getting past the helo.
It would be REAL nice to be able to drop the connection from a .download domain at the Helo step rather that what is happening now: Its ran through the bloc lists, then finally rejected by the sender address in the from field. A lot of wasted time for messages from a server that will be dropped anyway :PThanks in advance!
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1: I see no way of using DNS block lists like dbl.spamhaus.org (which only accept domain names, not IP addresses).
I have tried adding the option smtpd_client_restrictions=reject_rhsbl_client dbl.spamhaus.org on the general page under custom main.cf options. When I add it, I get a lot of log entries about it replacing existing smtpd_client_restrictions=reject_rhsbl_client lines.
Does not seem to work.Have you tried using zen.spamhaus.org in the RBL server list? That seems to work well with IP addresses:
postfix/postscreen[83574]: CONNECT from [193.189.117.147]:29103 to [127.0.0.1]:25 postfix/dnsblog[84018]: addr 193.189.117.147 listed by domain zen.spamhaus.org as 127.0.0.4 postfix/dnsblog[84018]: addr 193.189.117.147 listed by domain zen.spamhaus.org as 127.0.0.2 postfix/postscreen[83574]: DNSBL rank 2 for [193.189.117.147]:29103 postfix/postscreen[83574]: HANGUP after 1.1 from [193.189.117.147]:29103 in tests after SMTP handshake postfix/postscreen[83574]: DISCONNECT [193.189.117.147]:29103 -
1: I see no way of using DNS block lists like dbl.spamhaus.org (which only accept domain names, not IP addresses).
I have tried adding the option smtpd_client_restrictions=reject_rhsbl_client dbl.spamhaus.org on the general page under custom main.cf options. When I add it, I get a lot of log entries about it replacing existing smtpd_client_restrictions=reject_rhsbl_client lines.
Does not seem to work.Have you tried using zen.spamhaus.org in the RBL server list? That seems to work well with IP addresses:
postfix/postscreen[83574]: CONNECT from [193.189.117.147]:29103 to [127.0.0.1]:25 postfix/dnsblog[84018]: addr 193.189.117.147 listed by domain zen.spamhaus.org as 127.0.0.4 postfix/dnsblog[84018]: addr 193.189.117.147 listed by domain zen.spamhaus.org as 127.0.0.2 postfix/postscreen[83574]: DNSBL rank 2 for [193.189.117.147]:29103 postfix/postscreen[83574]: HANGUP after 1.1 from [193.189.117.147]:29103 in tests after SMTP handshake postfix/postscreen[83574]: DISCONNECT [193.189.117.147]:29103Yes, I am using Zen. It is an IP address based list. It only accepts IP addresses as it should, and works fine. The Evil Nasty spammers and malware sites like to move around a lot to try and beat the ip based block lists.
The lists that I want to use are based on their domains. They only accept domain names not IP addresses. Many of the best lists are switching to domain based for better blocking. -
Sorry, I completely misread that first line in your post. :-[
I think you'll have to modify your [i]main.cf and restart postfix manually to make that work. Unfortunately, the change will be over-written next time you save your config from the GUI.
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1. You need to manually edit /usr/local/pkg/postfix.inc this will keep your changes after a postfix reload but needs to be re edited after a package update. eg.:
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smtpd_helo_restrictions = check_helo_access pcre:{$pf_dir}/etc/postfix/helo_check,
reject_unknown_helo_hostname,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname,
reject_rhsbl_helo hostkarma.junkemailfilter.com=127.0.0.2,
** reject_rhsbl_helo dbl.spamhaus.org,**
permit
…
...
smtpd_sender_restrictions = reject_non_fqdn_sender,
reject_unknown_sender_domain,
reject_unauth_pipelining,
reject_multi_recipient_bounce,
** reject_rhsbl_sender dbl.spamhaus.org, **
permit
…
...
smtpd_client_restrictions = permit_mynetworks,
reject_unauth_destination,
check_client_access pcre:{$pf_dir}/etc/postfix/cal_pcre,
check_client_access cidr:{$pf_dir}/etc/postfix/cal_cidr,
reject_unknown_client_hostname,
reject_unauth_pipelining,
reject_multi_recipient_bounce,
reject_rhsbl_reverse_client hostkarma.junkemailfilter.com=127.0.0.2,
reject_rhsbl_reverse_client dbl.spamhaus.org,
permit
…And I guess this is highly ineffective, since Postscreen and RBL server List already reject almost everything and its safer, because you can combine as many rbl lists you like.
http://www.postfix.org/SMTPD_ACCESS_README.html
http://www.postfix.org/POSTSCREEN_README.html
2. You missing a dot before the asterisk and add always a comment to the REJECT, easier to identify false/positives:
/^From:.@__.__.download/ REJECT Spam Rule #20191
3. see 1. & 2.
Here a few commands to check your postfix rules if they match:
postmap -q - regexp:/usr/pbi/postfix-amd64/etc/postfix/body_check < /root/mail.txt
postmap -q - regexp:/usr/pbi/postfix-amd64/etc/postfix/header_check < /root/mail.txt
postmap -q - regexp:/usr/pbi/postfix-amd64/etc/postfix/mime_check < /root/mail.txt
postmap -q - regexp:/usr/pbi/postfix-amd64/etc/postfix/helo_check < /root/mail.txt
Just copy the full mail with the header etc. into mail.txt file before execute.
Usefull: http://www.regexr.com/
Best practice is a well configurated Postfix + Mailscanner + sa-updater-custom-channels.sh + clamav-unofficial-sigs.sh = Spam > 1%.
Cheers! ;)
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I tried your format
/^From:.@..eu/ REJECT Spam Rule #20191
and is KINDA works…It does block the .eu TLD, but also hits on addresses like From:bill@mail.eugene.ca.gov
This behavior is expected, since we are starting at the front of the screen. When I do it the right way: /^From:.@..eu$/ (with the $ to match the end for .eu), the PCRE simulators all work fine. It catches only the .eu TLD.
But when I put it in Postfix with the $ in it, it blocks nothing :P
Am I missing something?And thanks for the other guides. I am looking at them now :)
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So, for anyone here who's not given up yet and is having issues with https://redmine.pfsense.org/issues/4420 - there's v2.4.5 out. If someone's wiling to undo the manual hacks (stuff like cyrus-sasl2/libspf2 installed via pkg, symlinks etc.) and report back, it'd be appreciated.
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Hi, guys!
I have a problem.
I installed pfsense 2.2.4 x64 with postfix. And of course had issue with sqlite. I reinstall postfix using marcelloc instruction:
fetch -o /usr/local/www/postfix.php http://e-sac.siteseguro.ws/px22/postfix.txt
fetch -o /usr/local/www/widgets/widgets/postfix.widget.php http://e-sac.siteseguro.ws/px22/postfix.widget.txt
pbi_delete postfix-2.11.3_2-amd64
rm -f /usr/pbi/bin/libexec/postfix
rm -f /usr/local/etc/postfix
rm -f /var/spool/postfix
rm -f /var/mail/postfix
rm -f /var/db/postfix
pkg install postfix
etc…now it work. BUT it reject all mails.
Here is a part of log:Nov 11 10:35:13 pfSense postfix/postscreen[96424]: CONNECT from [209.85.223.170]:33179 to [127.0.0.1]:25 Nov 11 10:35:19 pfSense postfix/postscreen[96424]: PASS NEW [209.85.223.170]:33179 Nov 11 10:35:19 pfSense postfix/smtpd[48617]: connect from mail-io0-f170.google.com[209.85.223.170] Nov 11 10:35:19 pfSense postfix/smtpd[48617]: warning: unknown smtpd restriction: "reject_spf_invalid_sender" Nov 11 10:35:19 pfSense postfix/verify[51147]: cache btree:/var/db/postfix/verify_cache full cleanup: retained=5 dropped=0 entries Nov 11 10:35:19 pfSense postfix/smtpd[48617]: NOQUEUE: reject: RCPT from mail-io0-f170.google.com[209.85.223.170]: 451 4.3.5 Server configuration error; from= <mymail@gmail.com>to= <mymail@mydomain.ru>proto=ESMTP helo= <mail-io0-f170.google.com>Nov 11 10:35:20 pfSense postfix/cleanup[59443]: 1E0D61138ADC: message-id=<20151111083520.1E0D61138ADC@pfSense.localdomain> Nov 11 10:35:20 pfSense postfix/smtpd[48617]: disconnect from mail-io0-f170.google.com[209.85.223.170] Nov 11 10:35:20 pfSense postfix/qmgr[57167]: 1E0D61138ADC: from=<double-bounce@pfsense.localdomain>, size=981, nrcpt=1 (queue active) Nov 11 10:35:20 pfSense postfix/smtp[60115]: 1E0D61138ADC: to=<postmaster@pfsense.localdomain>, orig_to=<postmaster>, relay=none, delay=0.17, delays=0.01/0.01/0.16/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=pfSense.localdomain type=A: Host not found) Nov 11 10:35:20 pfSense postfix/bounce[68723]: warning: 1E0D61138ADC: undeliverable postmaster notification discarded Nov 11 10:35:20 pfSense postfix/qmgr[57167]: 1E0D61138ADC: removed</postmaster></postmaster@pfsense.localdomain></double-bounce@pfsense.localdomain></mail-io0-f170.google.com></mymail@mydomain.ru></mymail@gmail.com>I added in Access Lists -> MyNetworks:
127.0.0.1
192.168.0.247 Exchange IP
192.168.0.250 Pfsense LAN IP
192.168.0.0/24I found this advise for Postfix forwarder on 2.1_x64
1. Copied /usr/local/etc/postfix to /usr/pbi/postfix-amd64/etc/postfix
2. Once I put 2,6s into the greet wait time under antispam, it seemed to workbut it doesn't work for me(((
It's seem something wrong with postscreen….
pease help me
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I've solved my problem. :)
Thanks for awesome package -
Tried this… First time I did only the helo lines, did not work, even after reboot. Nothing changed in main.cf
Did the other lines, rebooted, then it reverted with ownership errors on the database files :P
Ideas?1. You need to manually edit /usr/local/pkg/postfix.inc this will keep your changes after a postfix reload but needs to be re edited after a package update. eg.:
…
smtpd_helo_restrictions = check_helo_access pcre:{$pf_dir}/etc/postfix/helo_check,
reject_unknown_helo_hostname,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname,
reject_rhsbl_helo hostkarma.junkemailfilter.com=127.0.0.2,
** reject_rhsbl_helo dbl.spamhaus.org,**
permit
…
...
smtpd_sender_restrictions = reject_non_fqdn_sender,
reject_unknown_sender_domain,
reject_unauth_pipelining,
reject_multi_recipient_bounce,
** reject_rhsbl_sender dbl.spamhaus.org, **
permit
…
...
smtpd_client_restrictions = permit_mynetworks,
reject_unauth_destination,
check_client_access pcre:{$pf_dir}/etc/postfix/cal_pcre,
check_client_access cidr:{$pf_dir}/etc/postfix/cal_cidr,
reject_unknown_client_hostname,
reject_unauth_pipelining,
reject_multi_recipient_bounce,
reject_rhsbl_reverse_client hostkarma.junkemailfilter.com=127.0.0.2,
reject_rhsbl_reverse_client dbl.spamhaus.org,
permit
…And I guess this is highly ineffective, since Postscreen and RBL server List already reject almost everything and its safer, because you can combine as many rbl lists you like.
http://www.postfix.org/SMTPD_ACCESS_README.html
http://www.postfix.org/POSTSCREEN_README.html
2. You missing a dot before the asterisk and add always a comment to the REJECT, easier to identify false/positives:
/^From:.@__.__.download/ REJECT Spam Rule #20191
3. see 1. & 2.
Here a few commands to check your postfix rules if they match:
postmap -q - regexp:/usr/pbi/postfix-amd64/etc/postfix/body_check < /root/mail.txt
postmap -q - regexp:/usr/pbi/postfix-amd64/etc/postfix/header_check < /root/mail.txt
postmap -q - regexp:/usr/pbi/postfix-amd64/etc/postfix/mime_check < /root/mail.txt
postmap -q - regexp:/usr/pbi/postfix-amd64/etc/postfix/helo_check < /root/mail.txt
Just copy the full mail with the header etc. into mail.txt file before execute.
Usefull: http://www.regexr.com/
Best practice is a well configurated Postfix + Mailscanner + sa-updater-custom-channels.sh + clamav-unofficial-sigs.sh = Spam > 1%.
Cheers! ;)
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I ma wondering if I did not have the right section, since I have the header verification box set to basic? After stepping through the PHP should I be putting it here?
Original:
Don't talk to mail systems that don't know their own hostname.
smtpd_helo_required = yes
{$reject_unknown_helo_hostname}smtpd_sender_restrictions = reject_unknown_sender_domain,
RBLRBLRBLAllow connections from specified local clients and rbl check everybody else if rbl check are set.
smtpd_client_restrictions = permit_mynetworks,
reject_unauth_destination,
check_sender_access hash:{$pf_dir}/etc/postfix/sender_access,
check_client_access pcre:{$pf_dir}/etc/postfix/cal_pcre,
check_client_access cidr:{$pf_dir}/etc/postfix/cal_cidr
RBLRBLRBLWhitelisting: local clients may specify any destination domain.
#,
smtpd_recipient_restrictions = permit_mynetworks,
reject_unauth_destination,
check_sender_access hash:{$pf_dir}/etc/postfix/sender_access,
check_client_access pcre:{$pf_dir}/etc/postfix/cal_pcre,
check_client_access cidr:{$pf_dir}/etc/postfix/cal_cidr,
SPFSPFSPFRBLRBLRBLModified:
Don't talk to mail systems that don't know their own hostname.
smtpd_helo_required = yes
{$reject_unknown_helo_hostname}smtpd_sender_restrictions = reject_unknown_sender_domain,
reject_rhsbl_reverse_client dbl.spamhaus.org,
RBLRBLRBLAllow connections from specified local clients and rbl check everybody else if rbl check are set.
smtpd_client_restrictions = permit_mynetworks,
reject_unauth_destination,
check_sender_access hash:{$pf_dir}/etc/postfix/sender_access,
check_client_access pcre:{$pf_dir}/etc/postfix/cal_pcre,
check_client_access cidr:{$pf_dir}/etc/postfix/cal_cidr <–------- I see a missing , in the INC, put it in?
RBLRBLRBLWhitelisting: local clients may specify any destination domain.
#,
smtpd_recipient_restrictions = permit_mynetworks,
reject_unauth_destination,
check_sender_access hash:{$pf_dir}/etc/postfix/sender_access,
check_client_access pcre:{$pf_dir}/etc/postfix/cal_pcre,
check_client_access cidr:{$pf_dir}/etc/postfix/cal_cidr,
reject_rhsbl_reverse_client dbl.spamhaus.org,
reject_rhsbl_sender dbl.spamhaus.org,
reject_rhsbl_client dbl.spamhaus.org,
SPFSPFSPFRBLRBLRBLI would be using MailScanner, but I am running PFSense 2.2.4 and they say mailscanner does not work, or there is something we need to do to install it right, but my other thread went unanswered to see if it is working :P
