Tip: Install and Setting ssmtp for FreePBX

ssmtp

// http://wiki.centos.org/AdditionalRes...t=Repositories

wget http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm 
rpm -ivh epel-release-5-4.noarch.rpm

yum install ssmtp
vi /etc/ssmtp/ssmtp.conf

# Get enhanced (*really* enhanced) debugging information in the logs
# If you want to have debugging of the config file parsing, move this option
# to the top of the config file and uncomment
#Debug=YES

# For SMTP relay with gmail server
#root=postmaster
#AuthUser=myname@gmail.com
#AuthPass=password
#FromLineOverride=YES
#mailhub=smtp.gmail.com:587
#UseSTARTTLS=YES

# For SMTP server
MailHub=your.smtp.server:5525      # SMTP server hostname and port
#UseTLS=YES                        # Secure connection (SSL/TLS)
FromLineOverride=YES               # Force the From: line
Hostname=pbx.my.domain             # The name of this host
RewriteDomain=my.domain            # The host the mail appears to be coming from
Root=postmaster                    # Redirect mail for root@ to postmaster@
AuthUser=user@your.smtp.server     # Your SMTP server mail account
AuthPass=password                  # Your SMTP server mail password
AuthMethod=CRAM-MD5

// 關閉 sendmail 並且以 ssmtp 取代

cd /usr/sbin
mv sendmail sendmail.orig
ln -s /usr/sbin/ssmtp /usr/sbin/sendmail 

// 寄信測試

mail -s "this is a test mail" your@yahoo.com.tw
輸入 . <Enter>
Cc: <Enter> 

步驟開始

編輯 /etc/mail/sendmail.mc

cd /etc/mail
cp -a sendmail.mc sendmail.mc.orig
vi sendmail.mc 

搜尋 SMART_HOST

define(`SMART_HOST', `your.smtp.server')dnl
define(`RELAY_MAILER_ARGS', `TCP $h 587')
define(`ESMTP_MAILER_ARGS', `TCP $h 587')

搜尋 masquerade_envelope

FEATURE(masquerade_envelope)dnl
FEATURE(genericstable, `hash -o /etc/mail/genericstable')
GENERICS_DOMAIN_FILE(`/etc/mail/genericsdomain')dnl

搜尋 confAUTH_MECHANISMS

define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
FEATURE(`authinfo',`hash /etc/mail/auth/client-info')dnl

新增 domain 設定

cd /etc/mail
hostname -f > genericsdomain
touch genericstable
makemap -r hash genericstable.db < genericstable 

NOTES:

執行 hostname -f 出現錯誤 Unknow host
請檢查 /etc/hosts 有無紀錄

新增 SMTP 認證帳號及密碼的設定

cd /etc/mail
mkdir auth
chmod 700 auth/
cd auth/
vi client-info 

AuthInfo:your.smtp.server "U:smmsp" "I:userid" "P:password" "M:PLAIN"
AuthInfo:your.smtp.server:587 "U:smmsp" "I:userid" "P:password" "M:PLAIN"

NOTES:

your.smtp.server SMTP 主機位址
userid SMTP 帳號
password SMTP密碼

chmod 0600 client-info
makemap -r hash client-info.db < client-info
service sendmail restart 

//