im having an issue connecting to my mail server on port 25 i can connect to it on port 25 on the linux box through - telnet localhost 25 i can also connect to it through my windows machine on the LAN using the same above command. Code: dns:/home/admin# telnet 10.0.0.10 25 Trying 10.0.0.10... Connected to 10.0.0.10. Escape character is '^]'. 220 alexalextest.dyndns.org ESMTP Postfix (Debian/GNU) but when i try and connect to it from another location (over the internet) it just comes up with a blanking cursor and no prompt, which then forces me to ctrl c to get out, i have checked all postfix config files and ive followed the perfect setup howto on the forums - im using debian 3.1r2 here is my main.conf Code: # See /usr/share/postfix/main.cf.dist for a commented, more complete version smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h myhostname = alexalextest.dyndns.org alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname #mydestination = dns.strangled.net, localhost, localhost.localdomain, localhost relayhost = mynetworks = 127.0.0.0/8 mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all smtpd_sasl_local_domain = smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,rejec smtpd_tls_auth_only = no smtp_use_tls = yes smtpd_use_tls = yes smtp_tls_note_starttls_offer = yes smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt tls_random_source = dev:/dev/urandom virtual_maps = hash:/etc/postfix/virtusertable mydestination = /etc/postfix/local-host-names my hostnames are set correctly, i have double checked everything and i cant seem to findout why i cant connect to my server from an outside internet ip address, i have DMZ set on my router to foward to my servers ip address agian i can connect to the server and it comes up with the smtp prompt from within the local lan and localhost, so im stumped, can anyone give any clues?
I could be wrong but it's doing what Exim sometimes does when it cannot get the reverse dns lookup quick enough - I can get a connection after sometime: +OK POP3 alexalextest.dyndns.org v2003.83 server ready Do you have rev dns setup right on your own ip address?
i dont think this has to do with reverse dns lookups, ive had similar boxes on other domain names without reversals that dont have this issue =/ here is my mail.log Code: Oct 20 12:03:47 alexalextest postfix/smtpd[2696]: connect from unknown[10.0.0.3] Oct 20 12:03:49 alexalextest postfix/smtpd[2696]: disconnect from unknown[10.0.0.3] but i see no connects from my work address, hmmmm
Code: Starting nmap 3.70 ( http://www.insecure.org/nmap/ ) at 2006-10-20 00:25 BST Interesting ports on 222-153-247-170.jetstream.xtra.co.nz (222.153.247.170): (The 1648 ports scanned but not shown below are in state: closed) PORT STATE SERVICE 21/tcp open ftp 22/tcp open ssh 25/tcp filtered smtp 80/tcp open http 81/tcp open hosts2-ns 110/tcp open pop3 143/tcp open imap 443/tcp open https 993/tcp open imaps 995/tcp open pop3s 3128/tcp filtered squid-http 3389/tcp open ms-term-serv Nmap run completed -- 1 IP address (1 host up) scanned in 36.821 seconds [root@centos ~]# Look at your firewall
