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Sendmail spam


anonymous
21/12/2014, 12h27
Hi.

Someone send spam emails through my sendmail server. I try to block this spammer but i haven't find way to do that. There are lot of instructions in internet but none of them helped me. Is there anyone who have experience about sendmail? Could someone also explain why this domain cluster006.ovh.net is in sender information?
OS: Ubuntu 12.04
Sendmail: 8.14.4

Access file:
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# /etc/mail/access
# Copyright (c) 1998,2004 Richard Nelson .
# Time-stamp: <1998/10/27 10:00:00 cowboy>
# GPL'd config file, please feed any gripes, suggestions, etc. to me
#
# Function:
# Access Control for this smtp server - determines:
# * Who we accept mail from
# * Who we accept relaying from
# * Who we will not send to
#
# Usage:
# FEATURE(access_db[, type [-o] /etc/mail/access])dnl
# makemap hash access < access
#
# Format:
# lhs:
# email addr
# domain name unless FEATURE(relay_hosts_only) is used,
# then this is a fqdn - and relay-domains ($=R)
# must also be fqdns.
# network number must end on an octet boundary, or
# you're stuck going the longwinded way ;-{
# rhs:
# OK accept mail even if other rules in the
# running ruleset would reject it.
# RELAY Allow domain to relay through your SMTP
# server. RELAY also serves an implicit
# OK for the other checks.
# REJECT reject the sender/recipient with a general
# purpose message that can be customized.
# confREJECT_MSG [550 Access denied] will be issued
# DISCARD discard the message completely using
# the $#discard mailer.
# ### any text where ### is an RFC 821 compliant error code
# and "any text" is a message to return for
# the command
# Examples:
# spammer@aol.com REJECT
# FREE.STEALTH.MAILER@ 550 Spam not accepted
#
# Notes:
# With FEATURE(blacklist_recipients) this is also possible:
# badlocaluser 550 Mailbox disabled for this username
# host.mydomain.com 550 That host does not accept mail
# user@otherhost.mydomain.com 550 Mailbox disabled for this recipient
#
# Related:
# define(`confREJECT_MSG', `550 Access denied')dnl
# define(`confCR_FILE', `-o /etc/mail/relay-domains')dnl <<- $=R
# FEATURE(relay_hosts_only)dnl
# FEATURE(relay_entire_domain)dnl <<- relays any host in the $=m class
# FEATURE(relay_based_on_MX)dnl <<- relaying for boxes MX'd to you
# FEATURE(blacklist_recipients)dnl
# FEATURE(rbl[,alternate server])dnl
# FEATURE(orbs[,alternate server])dnl <<- Debian addition
# FEATURE(orca[,alternate server])dnl <<- Debian addition
# FEATURE(accept_unqualified_senders)dnl
# FEATURE(accept_unresolvable_domains)dnl
#
# Local addresses 10.x.x.x, 127.x.x.x, 172.16-31.x.x 192.168.x.x can relay
# Note Well! You *must* make sure these address can't be spoofed externally
# Note, outbound relaying is controlled by connection and/or auth
# If you're not firewalled, and you don't have a lan, comment these out
# If you're not firewalled, and you have a lan, get firewalled *NOW*
# GreetPause - delay to check for spammers
# Client Connection rate (and #) control
Connect:localhost OK
GreetPause:localhost 0
ClientRate:localhost 0
ClientConn:localhost 0
#Connect:10 REJECT
#GreetPause:10 0
#ClientRate:10 0
#ClientConn:10 0
Connect:127 RELAY
GreetPause:127 0
ClientRate:127 0
ClientConn:127 0
Connect:IPv6:::1 REJECT
GreetPause:IPv6:::1 0
ClientRate:IPv6:::1 0
ClientConn:IPv6:::1 0
#Connect:172.16 RELAY
#Connect:172.17 RELAY
#Connect:172.18 RELAY
#Connect:172.19 RELAY
#Connect:172.20 RELAY
#Connect:172.21 RELAY
#Connect:172.22 RELAY
#Connect:172.23 RELAY
#Connect:172.24 RELAY
#Connect:172.25 RELAY
#Connect:172.26 RELAY
#Connect:172.27 RELAY
#Connect:172.28 RELAY
#Connect:172.29 RELAY
#Connect:172.30 RELAY
#Connect:172.31 RELAY
#Connect:192.168 RELAY
#GreetPause:192.168 0
#ClientRate:192.168 0
#ClientConn:192.168 0
# Defaults
GreetPause: 5000
ClientRate: 10
ClientConn: 10
#
# Don't offer AUTH on local network
#SRV_Features:192.168.1 A
#
# Hosts with to allow relaying
#
#
# Hosts that validly forward to me
#GreetPause: 0
#ClientRate: 30
#ClientConn: 0
#
# Whitelisted users
#
#
# Blacklisted users
#
#Connect:rampellsoft.com 554 Email directly, not through didtheyreadit.com
reject@ REJECT
#From:MAILER-DAEMON@store2.netvisao.pt REJECT
#
# Block invalid IPs
#
#Connect:0 REJECT whilst invalid, this also blocks sendmail -bs -Am
Connect:169.254 REJECT
Connect:192.0.2 REJECT
Connect:224 REJECT
Connect:255 REJECT
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