Helo. I am testing sender address syntax with :
smtpd_sender_restrictions = check_sender_access pcre:/etc/postfix/sender_syntax.pcre, reject And the file /etc/postfix/sender_syntax.pcre contains : /^([a-zA-Z0-9.\-_]+)@troll-hathor.nwk$/ OK /^\@/ REJECT 510 Invalid address format. /[!%\@].*\@/ REJECT 511 This server disallows weird address syntax. /.*/ REJECT You can't send E-Mails from this server. When I test the lookup table with : postmap -q someu...@example.com@example.com pcre:/etc/postfix/sender_syntax.pcre I got this : REJECT 511 This server disallows weird address syntax. Which I am expecting. But when I send a mail via telnet : telnet my_mailsrv.my_domain.com 25 EHLO MY_ASUS.my_domain.com MAIL FROM:user_1@my_domain.com@my_domain.com rcpt to:user_2@my_domain.com DATA Subject: TELNET FULLSMTP PORT 25 - Mon, 24 Sep 2018 19:27:18 +0200 - to user_2@my_domain.com This is a test mailing with TELNET on PORT 25 from user_1@my_domain.com@my_domain.com to user_2@my_domain.com fullsmtp : 'mailsrv.my_domain.com' 25 fullname : 'user_1@my_domain.com@my_domain.com' --> 'user_2@my_domain.com' . The mail is send. But it should be rejected with : REJECT 511 This server disallows weird address syntax. Looking at systemd logs, it seems that user_1@my_domain.com@my_domain.com is convert to "user_1@my_domain.com"@my_domain.com and truncated to user_1@my_domain.com postfix/smtpd[13269]: check_mail_access: user_1@my_domain.com@my_domain.com ............ postfix/smtpd[13269]: rewrite_clnt: local: "user_1@my_domain.com"@my_domain.com -> "user_1@my_domain.com"@my_domain.com ........... postfix/smtpd[13269]: rewrite_clnt: local: "user_1@my_domain.com"@my_domain.com -> "user_1@my_domain.com"@my_domain.com .......... postfix/smtpd[13269]: dict_pcre_lookup: /etc/postfix/sender_syntax.pcre: user_1@my_domain.com ........... postfix/smtpd[13269]: maps_find: pcre:/etc/postfix/sender_syntax.pcre: pcre:/etc/postfix/sender_syntax.pcre(0,lock|fold_fix|utf8_request): user_1@my_domain.com = OK ........... postfix/smtpd[13269]: mail_addr_find: user_1@my_domain.com -> OK ............ postfix/smtpd[13269]: check_table_result: pcre:/etc/postfix/sender_syntax.pcre OK user_1@my_domain.com What am i missing ? Any help is welcome. ----- Thank you for helping ________ Opensuse Leap 15 -- Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html
