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[02:06:34] <lunaphyte> tmberg: ah, yes, thank you
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[03:16:00] <Moult> i'm trying to set up spam filtering on my mailserver. no spamassassin is running. i have merely added zen.spamhaus.org to my reject_rbl_client in smtpd_client_restrictions. however spam is still coming in. mutt states the ip of one of the spam messages is 198.49.66.228 - any ideas why that might've come through?
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[03:18:50] <rob0> from the server, "dig 2.0.0.127.zen.spamhaus.org any"
[03:19:37] <rob0> That 127.0.0.2 address is commonly used by DNSBLs as a testing entry.
[03:20:10] <rob0> feel free to pastebin your results somewhere
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[03:30:58] <jaybe> !nullclient
[03:30:58] <knoba> jaybe: "nullclient" : a null client is a computer that can only send mail. it receives no mail from the network, and it does not deliver any mail locally. while postfix can be configured to fill this role, it is often unnecessary overkill, and a much simpler software package is more appropriate. see !nullclient_software for more details.
[03:31:29] <jaybe> !nullcient_software
[03:31:29] <knoba> jaybe: Error: "nullcient_software" is not a valid command.
[03:31:35] <jaybe> !nullclient_software
[03:31:35] <knoba> jaybe: "nullclient_software" : a program that serves as a drop in replacement for /usr/sbin/sendmail and provides a simple means to submit messages to an existing msa without the need to install and maintain a full-blown mta/msa. examples include msmtp, esmtp, ssmtp and nullmailer. also see !msa
[03:35:26] <pj> Moult: a single dnsrbl is not going to solve all of your SPAM problems.
[03:37:48] <pj> that Ip is in zen, though, so it should have rejected.
[03:37:56] <rob0> It should have blocked that one, yes.
[03:38:05] <pj> !tell Moult showconfig
[03:38:06] <knoba> Moult: "showconfig" : when asked to provide your config, pastebin postconf -nf and postconf -Mf. if your version is too old for those commands to work (< 2.9), you should upgrade, but see !showconfig_old
[03:38:25] <pj> ...and...
[03:38:33] <pj> !tell Moult relevant_logs
[03:38:33] <knoba> Moult: "relevant_logs" : Relevant logs are mail.* syslog Postfix logs (NOT verbose, see !verbose) which show the entire handling of a single mail which illustrates the issue with which you want help. Random selections from your mail log might not do. IMAP/POP3 daemons and external delivery agents typically log to the same facility (mail); those are usually not relevant here.
[03:38:34] <rob0> I suspect the problem is outside of Postfix, i.e., resolv.conf
[03:38:45] <pj> Moult: show these, please ^^^^^^
[03:39:18] <pj> rob0: I'm suspecting that he doesn't have the restriction set up properly.
[03:39:55] <rob0> could be either
[03:40:21] <pj> could also be an ISP resolver that blocks DNSRBLs
[03:40:51] <rob0> (or is blocked by spamhaus)
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[03:43:38] <pj> yep
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[04:36:07] <tharkun> pj: Ping! What time is it on your TZ?
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[04:50:54] <tharkun> pj: How old are you? (my daughter is asking.) She know the world will not end tomorrow if you answear my pings ;P)
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[05:32:17] <Moult> pj: looking into it now
[05:34:10] <Moult> pj: https://bpaste.net/show/83eafff1cce1 and https://bpaste.net/show/c98481d3b434
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[05:38:54] <Moult> pj: https://bpaste.net/show/31772ca9f09a here is the log with some surrounding log messages of when that email got accepted. as you can see zen.spamhaus.org was used to block a message afterwards, but not for that message.
[05:39:47] <Moult> rob0: ^ as seen in the log the blacklist seems to be applying to other emails, so why did that IP slip through?
[05:39:58] <Moult> pj: how did you check if it was in the blacklist?
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[05:46:52] <lunaphyte> Moult: which ip is the one in question?
[05:51:31] <Moult> lunaphyte: 198.49.66.228 - just checked with mxtoolbox and says it's listed, but is there a more official way to check?
[05:58:09] <pj> tharkun: 6pm right now
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[06:02:40] <pj> Moult: from the server: dig 228.66.49.198.zen.spamhaus.org A +short
[06:03:10] <pj> what is the result of that ^^^^^^
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[06:12:10] <Moult> pj: 127.0.0.3
[06:12:30] <rob0> you'd also want the TXT, which is why I use a qtype "all".
[06:12:49] <rob0> "all" is not broken yet, at least at Spamhaus.
[06:13:40] <rob0> 02:18 < rob0> from the server, "dig 2.0.0.127.zen.spamhaus.org any"
[06:13:40] <rob0> 02:19 < rob0> That 127.0.0.2 address is commonly used by DNSBLs as a testing entry.
[06:13:43] <rob0> 02:20 < rob0> feel free to pastebin your results somewhere
[06:13:47] <lunaphyte> any?
[06:14:00] <rob0> any, sorry :(
[06:14:12] <rob0> it's late, I'm tired
[06:14:22] <lunaphyte> any way, it's all the same :)
[06:14:30] <lunaphyte> yes, same here. time to sleep
[06:14:35] <rob0> good night
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[06:16:42] <pj> Moult: the server is returning the result you want, but it might not have at the time the email went through, based on that you had another message that was blocked from zen immediately afterwards I would say that postfix is fine and the problem has to do with DNS...
[06:17:44] <pj> the issue is that spamhaus only allows a certain number of queries from a given IP address unless you pay to get more, so what I think may be happening is you're using your ISPs DNS server and so you're not the only one querying spamhaus from it...
[06:17:59] <pj> what you may want to do is configure and run your own DNS resolver for this.
[06:18:41] <pj> that is, assuming you aren't already.
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[06:22:37] <Moult> pj: i'm probably using the ISP's dns resolver
[06:23:00] <Moult> pj: so it would be a bad idea to modify resolv.conf to be google's dns? (ie. 8.8.8.8)
[06:23:47] <pj> Moult: yeah, I don't think that would help.
[06:23:48] <Moult> rob0: if i use ANY i get a URI telling me it's from SBL
[06:24:09] <pj> you really want to set up your own resolver, imo.
[06:30:48] <Moult> pj: my own resolver is just a server with bind, right?
[06:33:38] <pj> yep, properly configured, of course.
[06:37:45] <Moult> pj: can it be the same server as the mailserver? because i'm already running bind on it
[06:38:16] <pj> Moult: it can be, yes.
[06:40:17] <Moult> pj: hmm, modifying resolv.conf to my server IP doesn't resolve now :(
[06:44:45] <pj> Moult: test it with dig first.
[06:45:36] <jrj> hello. i want to clear some questions
[06:45:41] <jrj> way1
[06:45:41] <jrj> SMTP1 SMTP2
[06:45:41] <jrj> | | | |
[06:45:41] <jrj> | | | |
[06:45:41] <jrj> | (lmtp) |
[06:45:41] <jrj> | IMAP |
[06:45:43] <jrj> | (imap) |
[06:45:45] <jrj> (----smtp-\-)
[06:45:47] <jrj> MUA /
[06:45:49] <jrj> (imap)
[06:45:51] <jrj> way2
[06:45:53] <jrj> SMTP1 SMTP2
[06:45:55] <jrj> | |
[06:45:56] <pj> jrj: STOP!
[06:45:57] <jrj> | |
[06:45:59] <jrj> (smtp)
[06:46:01] <jrj> IMAP/SMTP
[06:46:03] <jrj> (imap/smtp)
[06:46:07] <jrj> | |
[06:46:09] <jrj> (imap/smtp)
[06:46:11] <jrj> MUA
[06:46:14] <jrj> why way1 was recommended?
[06:46:23] <jrj> why stop? pastebin?
[06:46:27] <pj> jrj: please do not do that again
[06:46:45] <pj> !tell jrj paste
[06:46:45] <knoba> jrj: "paste" : A pastebin is a way to share larger amounts of data with others, without flooding the channel with garbage. You can find pastebins at http://paste.debian.net, http://apaste.info and various other sites. Please avoid using pastebins with active content or intrusive ads such as pastebin.com. Remember to share the URL of the resulting paste in channel.
[06:47:26] <Moult> pj: will do :)
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[06:50:21] <Moult> pj: ok, i had to add localhost to bind's trusted ACL for the recursive dns check. odd that 127.0.0.1/8 didn't match it
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[06:51:59] <pj> could be ::1
[06:53:00] <jrj> sorry. I was not going to flood. this ascii art has the meaning for question. and pastebins can expire. some time later here can be only question, without explaining scheme...
[06:55:19] <Moult> pj: so now if i understand correctly, when my server wants to resolve something, first it checks /etc/hosts, then it checks its own bind (and any domains i have listed there), then if it can't find it it jumps to bind's default list
[06:57:16] <jrj> http://paste.debian.net/366567/
[06:57:19] <pj> Moult: bind doesn't look at /etc/hosts, neither does postfix by default, but most apps will use your server's resolving library which does.
[06:58:09] <pj> bind will return an authoritative answer for those zones it is configured for, and barring that, if it is configured as a resolver it will resolve other domains and return a non-authritative answer.
[06:58:18] <jrj> why way1 was recommended? what core advantages/disadvantages has way1 and way2?
[07:00:24] <jrj> my info: way1 - if smtp1 not working - MUA will have random problems with sending. need to remove dns entry for smtp1. need time for dns caching systems
[07:01:40] <jrj> my info: way 2 - additional load and configure of smtp service on imap/smtp server (one machine).
[07:02:17] <Moult> pj: by default bind is configured as a resolver, right?
[07:04:07] <Moult> pj: let me rtfm for a while :)
[07:05:16] <pj> Moult: you should probably be asking in #bind
[07:05:49] <Moult> pj: yep :) or rtfm --the config file is pretty clear thankfully
[07:06:05] <pj> yes
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[07:15:02] <jrj> maybe some common recommendations? or such configs applied on individual parameters in each case?
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[07:55:57] <jrj> found some more info. when postfix and dovecot on different hosts - sasl communication need more configuration. usually it is unix socket, but when different hosts - it is inet_listener. and ssl is a must... it is not so difficult, but all system became complicated... need to get all + and - of both ways...
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[10:13:27] <altin> When you guys use mysql for virtualization of users and domains, what do you use as a webmail admin client? Postfixadmin or anything else?
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[10:23:26] <survietamine> altin: I have postfixadmin but not for "webmail admin"
[10:23:53] <survietamine> anyway, all these admin gui are not good enought imho
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[10:29:34] <altin> survietamine what's your experience with postfixadmin ?
[10:35:05] <survietamine> I don't need it for myself, it's just to give the ability to some "technicians" to manage accounts and aliases for their domains
[10:35:49] <survietamine> and the postmaster before me installed the whole mail system around postfixamin. I mean the database structure
[10:49:17] <jrj> it has domain admins.
[10:49:34] <jrj> exactly for delegating domain administration
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[11:05:54] <survietamine> jrj: yes, that's what I am using with postfixadmin
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[11:06:11] <survietamine> delegating (in facts sharing) admin with some "local" admin
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[11:37:53] <jrj> survietamine, what is the task? not sure I get your question right
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[11:55:00] <survietamine> jrj: it's not my question, I answered altin
[11:55:14] <survietamine> he asked me what I do with postfixadmin
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[12:06:03] <jrj> sorry. little misunderstood
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[13:48:18] <zigurat> Hi. Is there any way to relay only submission traffic? By using transport it relays all traffic.
[13:59:28] <Zerberus> sure
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[14:14:58] <zigurat> Yes Zerberus thanks!
[14:32:22] <survietamine> :)
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[19:43:36] <lvlinux> How can I drop mail sent to a certain address? I have a catchall @domain.com virtual address, but what if I want to reject mail sent to address1 at domain dot com ?
[19:44:54] <Dominian> !catchall
[19:44:55] <knoba> Dominian: "catchall" : Sending all emails for non-existing users in domain to a special account. See man 5 virtual for the @domain syntax, which applies in virtual_*_maps and relay_recipient_maps. For local(8) delivery, unset local_recipient_maps and see luser_relay. WARNING: catchalls are rarely a good idea. Spammers will abuse them.
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[19:46:32] * lvlinux reads man 5 virtual and thanks Dominian...
[19:47:32] <Dominian> welcome
[19:47:40] <Dominian> In all reality, catchalls are a big no no
[19:47:52] <Dominian> Much easier to have existing accounts, and accounts that don't exist get automatically rejected.
[19:48:06] <Dominian> very rarely is a catchall needed.
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[19:48:33] <lvlinux> Yes I do understand the spam implications, but we do have a certain need for catchalls unfortunately.
[19:49:18] <thumbs> lvlinux: no, you don't.
[19:49:27] <Dominian> what's the need?
[19:49:27] <lvlinux> eh?
[19:49:32] <Dominian> we may be able to tell you why you don't need it ;)
[19:49:40] <lvlinux> Well that would be great:
[19:50:29] <tuxick> "manager"
[19:50:52] <lvlinux> For a personal email domain, when signing up for a service or whatever, we give a unique email address like facebook at domain dot com pinterest at domain dot com homedepot at domain dot com
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[19:51:03] <rob0> ah, then you need:
[19:51:06] <lvlinux> So now we have literally scores of addresses
[19:51:09] <rob0> !recipient_delimiter
[19:51:10] <knoba> rob0: "recipient_delimiter" : a configuration parameter in the main.cf: The separator between user names and address extensions (user+foo). See canonical(5), local(8), relocated(5) and virtual(5) for the effects this has on aliases, canonical, virtual, relocated and on .forward file lookups. Basically, the software tries user+foo and .forward+foo before trying user and .forward.
[19:51:11] <tuxick> domain with catchall will make you very popular in russia
[19:51:30] <tuxick> svetlana will want to meet them all
[19:51:36] <lvlinux> lol
[19:51:38] <tuxick> so does nadia
[19:53:24] <Dominian> lvlinux: what rob0 posted is what you really need to look ito
[19:53:40] <Dominian> Then you can use the delimiter to push the email incomign to a proper address without having to create a catchall or a box per email address.
[19:53:43] <Dominian> makes life so much easier.
[19:54:21] <lvlinux> What is the difference in that behavior and a catchall? I'm not sure I understand the difference.
[19:54:59] <Dominian> In most setups, a catchall setup will go to at least one address
[19:55:24] <Dominian> So pretty much lvlinux I could write a script.. that literally runsn through a dictionary and puts your @example.com address in and throw tons of email at you
[19:55:30] <Dominian> and your server WILL accept it
[19:55:34] <lvlinux> yes, mine currently forwards to a certain user account.
[19:55:35] <lvlinux> ok
[19:56:26] <rob0> A dictionary attack is going to use common words and names, not hyphenated.
[19:57:25] <lvlinux> oh, so the delimiter would mean I would use homedepot-user1 at domain dot com and facebook-user1 at domain dot com or something like that? Sortof like a password in the email address itself in a way?
[19:57:26] <rob0> so "user at example dot com" will be tried, but "user-homedepot at example dot com" will not.
[19:57:51] <tuxick> hm
[19:57:51] <rob0> postconf.5.html#recipient_delimiter
[19:58:06] <tuxick> don't tell the russians!
[19:59:26] <lvlinux> ok. so that sounds like exactly the best thing for new domains---what about the domain we already have that we've given out tons of addresses already?
[20:01:50] <lvlinux> what would be the best course of action there?
[20:07:42] <rob0> try to remember & list them all!
[20:07:53] <lvlinux> ewwwwww. lol
[20:09:36] <tuxick> kill all spammers!
[20:09:37] <tuxick> please!
[20:09:45] <tuxick> it's a dirty job etc
[20:09:51] <rob0> In due time you might have to abandon that domain for email use.
[20:10:17] <lvlinux> Thankfully I don't get much spam on it.
[20:11:54] <lvlinux> Another domain I think I'm just going to take you guys advice and ditch the catchall and list the addresss as I don't have a lot on that domain.
[20:14:14] <lvlinux> But I'm curious about this behavior first:
[20:15:11] <lvlinux> I have been getting spam on "ason at domain dot com"
[20:16:00] <lvlinux> I had the catchall @domain.com, so above that in my virtual addresses file I added "ason at domain dot com" and set the forwarding address as "nowhere at example dot com"
[20:16:18] <lvlinux> But I'm still getting the mail at ason at domain dot com in the catchall box.
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[20:16:49] <lvlinux> I thought that (according to the man page) the full address specification would take precedence over the catchall?
[20:17:44] <rob0> That's the wrong way to do it.
[20:17:55] <rob0> !check_recipient_access
[20:17:55] <knoba> rob0: "check_recipient_access" : Search the specified access(5) database for the resolved RCPT TO address, domain, parent domains, or localpart@, and execute the corresponding action.
[20:18:02] <rob0> !access
[20:18:02] <knoba> rob0: "access" : http://www.postfix.org/SMTPD_ACCESS_README.html : An overview of access(5) controls in the Postfix smtpd(8) SMTP server.
[20:18:40] <lvlinux> k I'll check that. thanks!
[20:18:41] <rob0> And no, virtual aliases are recursive.
[20:18:58] <lvlinux> what do you mean by recursive?
[20:19:27] <lvlinux> searches for ANY match?
[20:19:35] <rob0> If a result is found, the result is also looked up.
[20:19:42] <rob0> man 5 virtual
[20:19:57] <lvlinux> ah, so my server was looking up example.com and seeing it as invalid and so went to the next match?
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[20:29:07] <shudon> hi all :) if i use sendmail(1) can i write to its stdin my entire email including headers?
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[20:30:07] <lvlinux> disregard my last question lol...
[20:32:16] <tuxick> shudon: might as well use telnet then
[20:34:11] <shudon> tuxick: hmm...
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[20:42:51] <tuxick> shudon: also i you want more control when testing, use sendemail
[20:43:00] <tuxick> saves a lot of typing
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[21:22:35] <shudon> tuxick: oh, i'll check it out. thanks :)
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[21:33:40] <shudon> tuxick: can i send my own smtp headers with sendemail? looked at man page and tried invoking it but it looks so far like i can only send message body?
[21:34:07] <tuxick> i don't know what exactly you expect to do
[21:35:23] <shudon> tuxick: i have an email and i want to re-send it
[21:35:43] <shudon> tuxick: it is mime/multipart with html and all that stuff
[21:35:54] <shudon> tuxick: maybe sendemail(1) isn't made with this in mind
[21:36:11] <shudon> ugh... now sendemail can't connect to localhost :(
[21:36:19] <shudon> Jan 19 12:30:59 mail sendemail[32445]: ERROR => Connection attempt to localhost:25 failed: IO::Socket::INET6: connect: Connection refused
[21:36:30] <shudon> looks like it's trying to connect to the ip6 host for some reason
[21:36:51] <shudon> which our mta does not listen on, even ::1
[21:37:32] <Zerberus> shudon: formail
[21:38:05] <shudon> tuxick: i used -s 127.0.0.1 to solve the ::1 problem
[21:38:15] <shudon> Zerberus: formail?
[21:38:30] <Zerberus> if you want to resend an existing mail
[21:39:18] <shudon> tuxick: i tried -o message-file=foo # but it just sent the entire thing, headers and all, as the plain text body of an email. guess that's what i should have expected
[21:39:48] <shudon> oh, huh.... there is a -o message-format=raw option
[21:40:35] <tuxick> i honestly don't know what you want with "own header"
[21:44:24] <shudon> tuxick: Date:, Content-Type:, etc.
[21:44:34] <shudon> tuxick: i have my file with all the email headers and email body
[21:44:45] <shudon> tuxick: what i mean is i want as much of this to remain intact as possible
[21:44:52] <shudon> Zerberus: i'll check this out, thanks :)
[21:45:09] <tuxick> why?
[21:45:33] <tuxick> oh because it already exists?
[21:45:35] <tuxick> !goal
[21:45:35] <knoba> tuxick: "goal" : describe your goal, not what you think the solution is
[21:46:09] <shudon> tuxick: our MTA gave up delivering an email. my goal is to make it start again as if it had never given up.
[21:46:28] <tuxick> you mean it returned to sender?
[21:46:41] <shudon> tuxick: yes
[21:47:04] <shudon> tuxick: another use case: the MTA could not connect to the remote MTA for a while
[21:47:14] <tuxick> then it stays in queue
[21:47:19] <shudon> tuxick: forever?
[21:47:24] <tuxick> no, usually 5 days
[21:47:26] <shudon> yes
[21:47:28] <tuxick> depending on config
[21:47:30] * shudon nods
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[22:24:59] <pj> shudon: sendemail is not a program provided by postfix, sendmail is.
[22:25:49] <pj> sendmail will accept the message along with all the headers and puts it in the pickup queue for postfix to process.
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   January 19, 2016  
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