SMTPd- / SMTP-authentication
SMTPd-authentication
SASL must be configured!
in /etc/postfix/main.cf:
smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes smtpd_recipient_restrictions = ... permit_sasl_authenticated
Testing
Code the username „larrylaffer“ with the password „kensentme“ for SMTP_AUTH in base64:
station7:~ # perl -MMIME::Base64 -e 'print encode_base64("larrylaffer\0larrylaffer\0kensentme");'
bGFycnlsYWZmZXIAbGFycnlsYWZmZXIAa2Vuc2VudG1l
Use the base64-output for a telnet session at port 25:
station7:/etc/postfix # telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 station7.example.com ESMTP Postfix ehlo station7.example.com 250-station7.example.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250 8BITMIME auth plain bGFycnlsYWZmZXIAbGFycnlsYWZmZXIAa2Vuc2VudG1l 235 Authentication successful quit 221 Bye Connection closed by foreign host
Test successful
SMTP-authentication
SASL must be configured!
in /etc/postfix/main.cf:
smtp_sasl_auth_enable = yes
Attention to the missing d - NOT smtpd_sasl_auth_enable, instead smtp_sasl_auth_enable
Create an additional email-account, e.g. „myauthaccount“ with password „secretpassword“just for authentication. Create in /etc/postfix/sasl_passwd separate lines for each mailserver you want to authenticate at: E.g.
smtp.goneo.de myauthaccount:secretpassword smtp.1und1.de myauthaccount:secretpassword
After this you have to hash /etc/postfix/sasl_passwd:
postmap /etc/postfix/sasl_passwd
Also an useful guide is (in German): http://www.contentschmiede.de/archiv/2005/08/26/postfix_fuer_typo3_und_gmx_fit_machen/
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