change smtp in postfix

carlainz · 04-28-2007, 03:33 AM

hello all,

I have installed postfix + dovecot but My ISP block the outgoing port 25.
The only way to get smtp mails delivered is by using the ISP's smtp server .
where i can change this in postfix ?

thanks

billymayday · 04-28-2007, 04:35 AM

Why not use your ISPs mail server? If you change the port postfix tries to connect on, every server on the other end will still be listening on 25

carlainz · 04-28-2007, 11:54 AM

hello,

yes i want set my ISP smtp , but i don't know where i can change this .....

billymayday · 04-28-2007, 03:55 PM

in main.cf

relayhost = your.isps.mail.server

carlainz · 04-29-2007, 03:21 AM

hello , thanks for the answer
i have change relayhost with my ISP smtp (smtp.wanadoo.nl) but not yet works.
in var/log/maillog i have this error

Apr 29 10:15:36 softhelp dovecot: IMAP(cab): Disconnected: Logged out
Apr 29 10:16:03 softhelp postfix/smtp[23511]: connect to smtp.wanadoo.nl[193.252.22.234]: Connection timed out (port 25)
Apr 29 10:16:33 softhelp postfix/smtp[23511]: connect to smtp.wanadoo.nl[193.252.22.245]: Connection timed out (port 25)

what happen ?
thanks

billymayday · 04-29-2007, 04:19 AM

Is your firewall open on port 25?

carlainz · 04-30-2007, 04:24 AM

hallo , yes the port 25 is open tcp and udp ...
i have try to telnet smtp.wanadoo.nl 25 , but i don't have connection ....
i have try also do disable firewaal and selinux nothing change ....

billymayday · 04-30-2007, 06:06 AM

Can you connect directly to this server with a mail client (Evolution or similar). Perhaps it requires some form of authorisation. Does their website say anything about connecting to their mailserver?