OpenWrt Forum Archive

Post #1

macmus

19 Oct 2009, 21:23

my config server.tab is:

..
#"TempErrorsAdmin"      "send-failures@xmailserver.test"
#"DefaultSMTPGateways"  "192.168.1.2,192.168.1.15"
"RemoveSpoolErrors"     "0"
"Pop3LogPasswd" "0"
#"NoSenderBounce"       "1"
#"DisableEmitAuthUser"  "1"
#"NotifyMsgLinesExtra"  "8"
#"NotifySendLogToSender"        "0"
#"NotifyTryPattern"     "1"
"MaxMTAOps"     "16"
"ReceivedHdrType"       "0"
"FetchHdrTags"  "+X-Deliver-To,+Received,To,Cc"
#"SmtpGwConfig" "NeedTLS=1,OutBind=192.168.1.1"
#"EnableCTRL-TLS"       "1"
#"EnableSMTP-TLS"       "1"
#"EnablePOP3-TLS"       "1"
#"SmtpMsgIPBanSpammers" "550 Denied due inclusion of your IP in our spam lists"
#"SmtpMsgIPBanSpamAddress"      "550 Denied due inclusion of your email address in our spam lists"
#"SmtpMsgIPBanMaps"     "550 Denied due inclusion of your IP in the following map"
#"CustomSMTPMessage"    "Please open http://www.xmailserver.test/smtp_errors.html to get more information about this error"
#"MaxMessageSize"       "20000"
"EnableAuthSMTP-POP3"   "0"
#"Pop3SyncErrorAccount" "psync-errors@xmailserver.test"
#"AllowNullSender"      "1"
#"AllowSmtpVRFY"        "1"
#"AllowSmtpETRN"        "1"
#"SMTP-MaxErrors"       "4"
#"SmtpMinDiskSpace"     "100000"
#"SmtpMinVirtMemSpace"  "64000"
#"Pop3MinVirtMemSpace"  "64000"
#"CustMapsList" "list.dsbl.org.:1,blackholes.mail-abuse.org.:1,dialups.mail-abuse.org.:0"
#"SMTP-RDNSCheck"       "1"
"CheckMailerDomain"     "1"
"SmartDNSHost"  "dns.home.bogus.net:tcp,192.168.1.1:udp"
#"SmtpConfig"   "mail-auth"
"SmtpConfig-192_168_0_2"        "mail-auth"
"DefaultSmtpPerms"      "MRVZ"

so my domain xmail serwer passed all relay info from http://www.antispam-ufrj.pads.ufrj.br/

however i have done some other tests:

1. w xmailu php there is
SmtpConfig-192_168_0_2 mail-auth
however is guides there is "." instead of "_" so what is correct , is it openwrt specific ?

2. External user (not within local network - so with public IP) can login on serwer on port 25 and send mails between users on local network

220 x.pl <1255951170.49170@x.pl> [XMail 1.26 ESMTP Server] service ready; Mon, 19 Oct 2009 13:19:30 +0200
ehlo x.pl
250-x.pl
250-VRFY
250-ETRN
250-8BITMIME
250-PIPELINING
250-AUTH LOGIN PLAIN CRAM-MD5
250-SIZE
250 STARTTLS
mail from:<dupa@dupa2343.com>
505 Your domain has no DNS/MX entries
mail from:<jadzia@x.pl>
250 OK
rcpt to:<admin@x.pl>
250 OK
data

so it is possible to spam local serwer users from its own serwer. This can overload the serwer

3. Sending as users o external network does not work (as page in top shows - so the serwer is not an relay)

20 x.pl <1255951501.51218@x.pl> [XMail 1.26 ESMTP Server] service ready; Mon, 19 Oct 2009 13:25:01 +0200
ehlo cezary.com
250-x.pl
250-VRFY
250-ETRN
250-8BITMIME
250-PIPELINING
250-AUTH LOGIN PLAIN CRAM-MD5
250-SIZE
250 STARTTLS
mail from:<admin@x.pl>
250 OK
rcpt to:<adam@gmail.com>
550 Relay denied
quit

4. And it is possible to spam users with from recipents

220 x.pl <1255959132.67602@x.pl> [XMail 1.26 ESMTP Server] service                                                                                                           ready; Mon, 19 Oct 2009 15:32:12 +0200
ehlo onet.pl
250-x.pl
250-VRFY
250-ETRN
250-8BITMIME
250-PIPELINING
250-AUTH LOGIN PLAIN CRAM-MD5
250-SIZE
250 STARTTLS
mail from:<obama@whitehouse.gov>
250 OK
rcpt to:<admin@x.pl>
250 OK
data
354 Start mail input; end with <CRLF>.<CRLF>
its word war 3 !!
250 OK <S5C>
q
500 Syntax error, command unrecognized
quit

how to eliminate case 2 and 4 cause thery are not good :>

Post #2

Dogge

19 Oct 2009, 22:43

Why not using /etc/config/xmail configuration file?

Post #3

macmus

20 Oct 2009, 08:14

how do you suggest then i should modfie it then .. cuase i don't understand

Post #4

macmus

21 Oct 2009, 19:41

up anyone ?

Post #5

macmus

8 Dec 2009, 14:45

up up up still stuck with the problem