i have a mail server set up and can successfully send mail using an email client aka thunderbird, im running postfix/courier-imap all the users are stored in a mysql db, i can recieve mail fine as well. im using apache and squirrelmail for my webmail. i have to use relayhost = mail.comcast.net in my postfix config so that my mail doesnt bounce, my ip is a DUL. when ever i send mail through SM i get timeouts when connecting to my ISP's mail server mail.comcast.net, on about 3 different ip addresses. its my understanding that SM uses the same setup that the clients do, SM is running on the same server as the other services aka courier and postfix. so why can i send mail with a client and not with SM? i have SM setup to use localhost for both incoming and outgoing mail so it uses my servers settings. what can i provide for you to better assist me? i have been messing with this for almost 2 weeks have asked countless people and mailing lists with no resolve. here is my postconf -n if that helps: mail root # postconf -n alias_maps = mysql:/etc/postfix/mysql-aliases.cf command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/lib/postfix debug_peer_level = 2 default_destination_concurrency_limit = 10 home_mailbox = .maildir/ html_directory = no inet_interfaces = all local_destination_concurrency_limit = 10 local_recipient_maps = $alias_maps $virtual_mailbox_maps unix:passwd.byname local_transport = local mail_owner = postfix mailq_path = /usr/bin/mailq manpage_directory = /usr/share/man mydestination = $myhostname, $mydomain, localhost.$mydomain, localhost mydomain = computernick.com myhostname = mail.computernick.com mynetworks = 192.168.0.0/24, 127.0.0.0/8 myorigin = computernick.com newaliases_path = /usr/bin/newaliases queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.1.5-r1/readme relayhost = mail.comcast.net relocated_maps = mysql:/etc/postfix/mysql-relocated.cf sample_directory = /etc/postfix sendmail_path = /usr/sbin/sendmail setgid_group = postdrop smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination unknown_local_recipient_reject_code = 550 virtual_alias_maps = mysql:/etc/postfix/mysql-virtual.cf virtual_gid_maps = static:100 virtual_mailbox_base = /home/vmail/ virtual_mailbox_domains = nyc0nshack.com virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-maps.cf virtual_minimum_uid = 1000 virtual_transport = virtual virtual_uid_maps = static:1001 thanks for any and all help nick