smtpd.conf:

sasl_pwcheck_method: auxprop
sasl_auxprop_plugin: mysql login plain crammd6 digestmd5
sasl_mech_list: PLAIN LOGIN DIGEST-MD5 CRAM-MD5
sql_engine: mysql
sql_user: postfixadmin
sql_passwd: fixpost
sql_hostnames: 10.3.50.80
sql_database: postfix
sql_select: SELECT password FROM mailbox WHERE username = '%u@%r'


maillog:

Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: warning: SASL authentication failure: realm changed: authentication aborted
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: warning: unknown[10.3.200.227]: SASL DIGEST-MD5 authentication failed: authentication failure
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: > unknown[10.3.200.227]: 535 5.7.8 Error: authentication failed: authentication failure
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: < unknown[10.3.200.227]: AUTH LOGIN
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: xsasl_cyrus_server_first: sasl_method LOGIN
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: xsasl_cyrus_server_auth_response: uncoded server challenge: Username:
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: > unknown[10.3.200.227]: 334 VXNlcm5hbWU6
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: < unknown[10.3.200.227]: c2hlbGx5QHJoeW1lc2ZvcmFsbHJlYXNvbnMubmV0
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: xsasl_cyrus_server_next: decoded response: shelly@rhymesforallreasons.net
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: xsasl_cyrus_server_auth_response: uncoded server challenge: Password:
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: > unknown[10.3.200.227]: 334 UGFzc3dvcmQ6
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: < unknown[10.3.200.227]: cmh5bWVz
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: xsasl_cyrus_server_next: decoded response: rhymes
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: warning: SASL authentication failure: no user in db
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: warning: SASL authentication failure: no user in db
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: warning: unknown[10.3.200.227]: SASL LOGIN authentication failed: authentication failure
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: > unknown[10.3.200.227]: 535 5.7.8 Error: authentication failed: authentication failure
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: < unknown[10.3.200.227]: QUIT
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: > unknown[10.3.200.227]: 221 2.0.0 Bye
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: match_hostname: unknown ~? 10.3.100.18/32
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: match_hostaddr: 10.3.200.227 ~? 10.3.100.18/32
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: match_list_match: unknown: no match
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: match_list_match: 10.3.200.227: no match
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: send attr request = disconnect
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: send attr ident = smtp:10.3.200.227
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: private/anvil: wanted attribute: status
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: input attribute name: status
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: input attribute value: 0
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: private/anvil: wanted attribute: (list terminator)
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: input attribute name: (end)
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: disconnect from unknown[10.3.200.227]
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: master_notify: status 1
Oct 18 22:22:52 Alejandra postfix/smtpd[34216]: connection closed
Oct 18 22:22:56 Alejandra postfix/smtpd[34216]: proxymap stream disconnect