CentOS 5.3
I am running Postfix/Dovecot and am using my Linux server to send and receive email from my domain name. I don't use it for spam, only personal emails to friends and family and website notifications where I have used certain emails to sign up for newsletters etc.
Each night I receive a logwatch email from my server. Everything looks OK, or what I would consider normal except for the Postfix log part.
For instance.
--------------------- postfix Begin ------------------------
1641675 bytes transferred
71 messages sent
71 messages removed from queue
71 messages sent????
There is no way I sent 71 email messages in one day from my server. Is it possible my server is being used by spammers as a relay? If so, how do I determine and prevent this?
In my postfix main.cf I have
realy_host=smtp.comcast.net
Here is my postconf -n
Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
home_mailbox = Maildir/
html_directory = no
inet_interfaces = all
local_recipient_maps =
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
maps_rbl_domains = rbl.maps.vix.com, dul.maps.vix.com
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mydomain = areamike.com
myhostname = www.areamike.com
mynetworks = 127.0.0.0/8
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
relayhost = smtp.g.comcast.net
sample_directory = /usr/share/doc/postfix-2.3.3/samples readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks, reject_invalid_hostname, permit
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, permit
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
unknown_local_recipient_reject_code = 550
Thanks for any insight.
mike
