Go Back   HowtoForge Forums | HowtoForge - Linux Howtos and Tutorials > Linux Forums > Server Operation
Reload this Page URGENT PLEASE: 3rd Time Installing and Still Have SMTP Issues with PostFix
Register FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read

Do you like HowtoForge? Please consider supporting us by becoming a subscriber.
Reply
 
Thread Tools Display Modes
  #1  
Old 21st June 2011, 02:18
norby norby is offline
Junior Member
  
Join Date: Jun 2011
Posts: 11
Thanks: 0
Thanked 1 Time in 1 Post
Default URGENT PLEASE: 3rd Time Installing and Still Have SMTP Issues with PostFix
Hello There,

I need some help with my SMTP settings. I followed this tutorial to the 't':

http://www.howtoforge.com/perfect-se...64-ispconfig-3

First the problem.

I cannot connect to my SMTP externally from my server. If a telnet on the server I get a response but when I telnet on a separate machine I get "Unable to connect to remote host". After trying telnet I tried added my account to an email client with password authentication and still unable to connect.

Here is some output information:

postconf -a

Code:
cyrus
dovecot
postconf -A

Code:
cyrus
postconf -m

Code:
btree
cidr
environ
hash
ldap
mysql
nis
pcre
pgsql
proxy
regexp
static
unix
postconf -n
Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
body_checks = regexp:/etc/postfix/body_checks
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = amavis:[127.0.0.1]:10024
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
header_checks = regexp:/etc/postfix/header_checks
html_directory = no
inet_interfaces = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mime_header_checks = regexp:/etc/postfix/mime_header_checks
mydestination = isone.example.com, localhost, localhost.localdomain
myhostname = isone.example.com
mynetworks = 127.0.0.0/8 [::1]/128
nested_header_checks = regexp:/etc/postfix/nested_header_checks
newaliases_path = /usr/bin/newaliases.postfix
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
receive_override_options = no_address_mappings
relay_domains = mysql:/etc/postfix/mysql-virtual_relaydomains.cf
relay_recipient_maps = mysql:/etc/postfix/mysql-virtual_relayrecipientmaps.cf
sample_directory = /usr/share/doc/postfix-2.3.3/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_client_restrictions = check_client_access mysql:/etc/postfix/mysql-virtual_client.cf
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_sender_restrictions = check_sender_access mysql:/etc/postfix/mysql-virtual_sender.cf
smtpd_tls_cert_file = /etc/postfix/smtpd.cert
smtpd_tls_key_file = /etc/postfix/smtpd.key
smtpd_tls_security_level = may
smtpd_use_tls = yes
transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf
unknown_local_recipient_reject_code = 550
virtual_alias_domains = 
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf
virtual_gid_maps = static:5000
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf
virtual_transport = dovecot
virtual_uid_maps = static:5000
dovecot -n

Code:
# 1.2.17: /etc/dovecot.conf
# OS: Linux 2.6.18-238.el5 x86_64 CentOS release 5.6 (Final) ext3
log_timestamp: %Y-%m-%d %H:%M:%S 
login_dir: /var/run/dovecot/login
login_executable(default): /usr/libexec/dovecot/imap-login
login_executable(imap): /usr/libexec/dovecot/imap-login
login_executable(pop3): /usr/libexec/dovecot/pop3-login
first_valid_uid: 5000
last_valid_uid: 5000
first_valid_gid: 5000
last_valid_gid: 5000
mail_location: maildir:/var/vmail/%d/%n/Maildir
mail_executable(default): /usr/libexec/dovecot/rawlog /usr/libexec/dovecot/imap
mail_executable(imap): /usr/libexec/dovecot/rawlog /usr/libexec/dovecot/imap
mail_executable(pop3): /usr/libexec/dovecot/rawlog /usr/libexec/dovecot/pop3
mail_plugins(default): quota imap_quota
mail_plugins(imap): quota imap_quota
mail_plugins(pop3): quota
mail_plugin_dir(default): /usr/lib/dovecot/imap/
mail_plugin_dir(imap): /usr/lib/dovecot/imap/
mail_plugin_dir(pop3): /usr/lib/dovecot/pop3
lda:
  postmaster_address: postmaster@example.com
  mail_plugins: sieve quota
  mail_plugin_dir: /usr/lib/dovecot/lda
  auth_socket_path: /var/run/dovecot/auth-master
auth default:
  mechanisms: plain login
  passdb:
    driver: pam
  passdb:
    driver: sql
    args: /etc/dovecot-sql.conf
  userdb:
    driver: passwd
  userdb:
    driver: sql
    args: /etc/dovecot-sql.conf
  socket:
    type: listen
    client:
      path: /var/spool/postfix/private/auth
      mode: 432
      user: postfix
      group: postfix
    master:
      path: /var/run/dovecot/auth-master
      mode: 384
      user: vmail
plugin:
  quota: maildir
  sieve_dir: ~/sieve
telnet localhost 25

Code:
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 isone.example.com ESMTP Postfix
ehlo localhost
250-isone.example.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

netstat -tap

Code:
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name   
tcp        0      0 *:imaps                     *:*                         LISTEN      7053/imap-login     
tcp        0      0 *:pop3s                     *:*                         LISTEN      7052/pop3-login     
tcp        0      0 localhost.localdomain:10024 *:*                         LISTEN      13137/amavisd (mast 
tcp        0      0 localhost.localdomain:10025 *:*                         LISTEN      13106/master        
tcp        0      0 *:mysql                     *:*                         LISTEN      13035/mysqld        
tcp        0      0 *:pop3                      *:*                         LISTEN      7052/pop3-login     
tcp        0      0 localhost.local:dyna-access *:*                         LISTEN      13153/clamd         
tcp        0      0 *:imap                      *:*                         LISTEN      7053/imap-login     
tcp        0      0 *:sunrpc                    *:*                         LISTEN      4608/portmap        
tcp        0      0 site09.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site08.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site07.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site06.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site05.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site04.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site03.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site27.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site26.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site25.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site24.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site23.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site22.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site21.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site20.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site02.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site19.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site18.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site17.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site16.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site15.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site14.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site13.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site12.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site11.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site10.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site01.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 site00.COM:domain          *:*                         LISTEN      13254/named         
tcp        0      0 isone.example.com:domain  *:*                         LISTEN      13254/named         
tcp        0      0 localhost.localdomai:domain *:*                         LISTEN      13254/named         
tcp        0      0 *:ftp                       *:*                         LISTEN      13202/pure-ftpd (SE 
tcp        0      0 *:ipp                       *:*                         LISTEN      4689/rpc.statd      
tcp        0      0 localhost.localdomain:rndc  *:*                         LISTEN      13254/named         
tcp        0      0 *:smtp                      *:*                         LISTEN      13106/master        
tcp        0      0 localhost.localdomain:mysql localhost.localdomain:43268 ESTABLISHED 13035/mysqld        
tcp        0      0 localhost.localdomain:43268 localhost.localdomain:mysql ESTABLISHED 13151/amavisd (ch1- 
tcp        0      0 localhost.localdomain:35251 localhost.localdomain:mysql ESTABLISHED 13152/amavisd (ch1- 
tcp       56      0 localhost.localdomain:45914 localhost.localdomain:10025 CLOSE_WAIT  13151/amavisd (ch1- 
tcp        0      0 localhost.localdomain:mysql localhost.localdomain:35251 ESTABLISHED 13035/mysqld        
tcp       56      0 localhost.localdomain:56778 localhost.localdomain:10025 CLOSE_WAIT  13152/amavisd (ch1- 
tcp        0      0 *:imaps                     *:*                         LISTEN      7053/imap-login     
tcp        0      0 *:pop3s                     *:*                         LISTEN      7052/pop3-login     
tcp        0      0 *:pop3                      *:*                         LISTEN      7052/pop3-login     
tcp        0      0 *:imap                      *:*                         LISTEN      7053/imap-login     
tcp        0      0 *:http                      *:*                         LISTEN      11219/httpd         
tcp        0      0 *:tproxy                    *:*                         LISTEN      11219/httpd         
tcp        0      0 *:domain                    *:*                         LISTEN      13254/named         
tcp        0      0 *:ftp                       *:*                         LISTEN      13202/pure-ftpd (SE 
tcp        0      0 *:ssh                       *:*                         LISTEN      6435/sshd           
tcp        0      0 localhost6.localdomain:rndc *:*                         LISTEN      13254/named         
tcp        0      0 *:pcsync-https              *:*                         LISTEN      11219/httpd         
tcp        0      0 *:https                     *:*                         LISTEN      11219/httpd         
tcp        0   3888 isone.example.com:ssh     h24-207-60-64.dlt.dcc:58191 ESTABLISHED 6849/0
iptables -L

Code:
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
Reply With Quote
Sponsored Links
  #2  
Old 21st June 2011, 08:57
falko falko is offline
Super Moderator
  
Join Date: Apr 2005
Location: Lüneburg, Germany
Posts: 41,665
Thanks: 1,896
Thanked 2,593 Times in 2,444 Posts
Default
Is there some other firewall (e.g. on your router) that blocks port 25? It is also possible that your ISP is blocking port 25.
__________________
Falko
--
Download the ISPConfig 3 Manual! | Check out the ISPConfig 3 Billing Module!

FB: http://www.facebook.com/howtoforge

nginx-Webhosting: Timme Hosting | Follow me on:
Reply With Quote
  #3  
Old 21st June 2011, 15:59
norby norby is offline
Junior Member
  
Join Date: Jun 2011
Posts: 11
Thanks: 0
Thanked 1 Time in 1 Post
Default
Falko, you are right. The most obvious solution is sometimes the most difficult to see.

I changed the SMTP port to 2525 and now things are working. My ISP must be blocking port 25. Need to get this corrected.

Thank you for your help.
Reply With Quote
  #4  
Old 22nd June 2011, 01:54
norby norby is offline
Junior Member
  
Join Date: Jun 2011
Posts: 11
Thanks: 0
Thanked 1 Time in 1 Post
Default
After checking with the ISP provider, they have assured me that port 25 is not being blocked. So I am still trying to figure out why my SMTP doesn't work on port 25.
Reply With Quote
  #5  
Old 22nd June 2011, 13:10
falko falko is offline
Super Moderator
  
Join Date: Apr 2005
Location: Lüneburg, Germany
Posts: 41,665
Thanks: 1,896
Thanked 2,593 Times in 2,444 Posts
Default
Did you check your router firewall?
__________________
Falko
--
Download the ISPConfig 3 Manual! | Check out the ISPConfig 3 Billing Module!

FB: http://www.facebook.com/howtoforge

nginx-Webhosting: Timme Hosting | Follow me on:
Reply With Quote
  #6  
Old 22nd June 2011, 18:11
norby norby is offline
Junior Member
  
Join Date: Jun 2011
Posts: 11
Thanks: 0
Thanked 1 Time in 1 Post
Default
No router installed. What is really odd is that when use a mail client to send and receive through port 2525 seems to be working fine. However, all emails that are sent out are addressed with the server name "name@isone.example.com" and also "name@example.com".

When sending an email from the system, localhost, using Java Mail and using SMTP setting mail.example.com through port 2525 all emails are marked as "Relay Access Denied".

Do you think this has anything to do with my DNS settings?

DNS Info: site1.com

A site1.com. 00.63.132.34
A mail 00.63.132.34
A ns1 00.63.132.34
A www 00.63.132.34
MX site1.com. mail.site1.com.
NS site1.com. ns1.site1.com.
NS site1.com. ns2.site1.com.
TXT site1.com. v=spf1 a mx ptr -all

DNS Info: site2.com

A site2.com. 00.63.132.35
A mail 00.63.132.35
A ns1 00.63.132.35
A www 00.63.132.35
MX site2.com. mail.site2.com.
NS site2.com. ns1.site2.com.
NS site2.com. ns2.site2.com.
TXT site2.com. v=spf1 a mx ptr -all
Reply With Quote
  #7  
Old 22nd June 2011, 18:12
norby norby is offline
Junior Member
  
Join Date: Jun 2011
Posts: 11
Thanks: 0
Thanked 1 Time in 1 Post
Default
No router installed. What is really odd is that when use a mail client to send and receive through port 2525 seems to be working fine. However, all emails that are sent out are addressed with the server name "name@isone.example.com" and also "name@example.com".

When sending an email from the system, localhost, using Java Mail and using SMTP setting mail.example.com through port 2525 all emails are marked as "Relay Access Denied".

Do you think this has anything to do with my DNS settings?

DNS Info: site1.com

A site1.com. 00.63.132.34
A mail 00.63.132.34
A ns1 00.63.132.34
A www 00.63.132.34
MX site1.com. mail.site1.com.
NS site1.com. ns1.site1.com.
NS site1.com. ns2.site1.com.
TXT site1.com. v=spf1 a mx ptr -all

DNS Info: site2.com

A site2.com. 00.63.132.35
A mail 00.63.132.35
A ns1 00.63.132.35
A www 00.63.132.35
MX site2.com. mail.site2.com.
NS site2.com. ns1.site2.com.
NS site2.com. ns2.site2.com.
TXT site2.com. v=spf1 a mx ptr -all
Reply With Quote
Reply

Bookmarks

Tags
postfix, smtp sending problem

« Previous Thread | Next Thread »
Thread Tools
Display Modes
Hybrid Mode Hybrid Mode

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +2. The time now is 07:37.

Contact Us - HowtoForge - Linux Howtos and Tutorials - Archive - Top

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, vBulletin Solutions, Inc.