2006隨手札記

Electronic Mail Services

(1)Service: Sendmail (MTA)

Packages: sendmail, sendmail-cf, sendmail-doc
Daemon: /usr/sbin/sendmail
Script: /etc/init.d/sendmail
Port: 25 (smtp)
Configuration: /etc/mail/sendmailmc, /etc/aliases, and others
Related: procmail(MDA), spamassassin, tcp_wrappers

(2)Service: Dovecot(MRA)

Packages: dovecot
Daemon: /usr/sbin/dovecot
Script: /etc/init.d/dovecot
Ports: 110(pop), 995(pop3s), 143(imap), 993(imaps)
Configuration: /etc/dovecot.conf
Related: procmail, openssl

%iptables開放Ports: 110(pop), 143(imap), 993(imaps), 995(pop3s)通過
%確認DNS(mx record)是否正確
%補裝Package: sendmail-cf

[root@server118 ~]# dig -t mx example.com

; > DiG 9.3.4-P1 > -t mx example.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER