[CentOS] postfix conf for use external smtp

["Guillermo Garron" <guillermo.fedora@xxxxxxxxx>]

Hi all,

i wonder how to configure postfix make it use externa smtp server i tried the following


relayhost = my.stmp.com
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_tls_security_options = $smtp_sasl_security_options
smtp_use_tls = yes


in
/etc/postfix/sasl_passwd
i have

my.smtp.com user:password

then i
postmap /etc/postfix/sasl_passwd

restart the postfix, but now i have this problem.

Jul 14 12:06:33 garron postfix/smtp[8510]: ECA31F3009D: to=< ggarron@xxxxxxxxxxx>, relay= my.smtp.com, delay=2, status=deferred (Authentication failed: cannot SASL authenticate to server scz.alketech.com[200.87.61.8 3]: no mechanism available)

i tried with

smtp_sasl_security_options = noanonymous
smtp_sasl_security_options = noplaintext, noanonymous
smtp_sasl_security_options =
but never works, with the second i got the error up. with the other it does not even try to login.

i also saw this.
when i issue this command as root


 postmap -q my.stmp.com hash:sasl_passwd
i go this error

Jul 14 13:12:13 garron postfix/postmap[9123]: fatal: open database sasl_passwd.db: Permission denied
i tried even with 777 permissions

any clues?

regards,

Guillermo.
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