How to fix error in Postfix config?

Question

linux

Hello! For some reason, when I try to send an email, I get an error:

[email protected]:/etc/postfix# echo "message" | mailx -s "subject" [email protected]
send-mail: fatal: /etc/postfix/main.cf, line 50: missing '=' after attribute name: "$virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps "
Can't send mail: sendmail process failed with error code 75
[email protected]:/etc/postfix# echo "message" | mailx -s "subject" [email protected]
send-mail: fatal: /etc/postfix/main.cf, line 50: missing '=' after attribute name: "$relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps "
Can't send mail: sendmail process failed with error code 75

Lines from /etc/postfix/main.cf (49-51)

proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps 
$relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps 
$relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps

OS: Ubuntu Server 16.04 x64
What could be the problem?

Answer 1

you brought one line. Read below

Answer 2

remove line breaks, postfix considers that lines 50-51 are two more parameters in the config, and not the one on 49