SMTP error - Invalid response code received from server (Code: 454)

[lruneh]

Hello
I got as far as being able to log on and receive mail. However, when I try to send mail, I get the error: (Authentication failure: Invalid response code received from server (Code: 454)).
I'm pretty sure it has to do with my SMTP settings, but I'm having trouble finding any solution, so if anyone could help, I would be very grateful.
Here is th content of my Roundcube error log:
  GNU nano 2.8.6                                           File: /var/www/html/lasserh.dk/roundcubemail/logs/errors                                                     

[03-Jan-2018 21:36:50 Europe/Berlin] ERROR: Connection timed out (110)
[03-Jan-2018 21:36:50 Europe/Berlin] ERROR: Failed to connect socket: Connection timed out ()
[03-Jan-2018 21:40:35 +0100]: <9ogf28oi> IMAP Error: Login failed for [email protected] from 80.210.69.55. Could not connect to ssl://mail.lasserh.dk:993: Connection tim$
[03-Jan-2018 21:41:27 Europe/Berlin] ERROR: Invalid response code received from server (454)
[03-Jan-2018 21:42:21 Europe/Berlin] ERROR: Invalid response code received from server (454)
[03-Jan-2018 21:42:45 +0100]: <9ogf28oi> IMAP Error: Login failed for [email protected] from 80.210.69.55. AUTHENTICATE PLAIN: Authentication failed. in /var/www/html/la$
[03-Jan-2018 21:43:22 +0100]: <551r1q7c> IMAP Error: Login failed for root from 80.210.69.55. AUTHENTICATE PLAIN: Authentication failed. in /var/www/html/lasserh.dk/rou$
[03-Jan-2018 21:43:38 +0100]: <551r1q7c> IMAP Error: Login failed for root from 80.210.69.55. AUTHENTICATE PLAIN: Authentication failed. in /var/www/html/lasserh.dk/rou$
[03-Jan-2018 21:44:07 Europe/Berlin] ERROR: Invalid response code received from server (454)
[03-Jan-2018 21:44:07 +0100]: <1bs3ck2m> SMTP Error: Authentication failure: Invalid response code received from server (Code: 454) in /var/www/html/lasserh.dk/roundcub$
[03-Jan-2018 21:45:38 Europe/Berlin] ERROR: php_network_getaddresses: getaddrinfo failed: Name or service not known (0)
[03-Jan-2018 21:45:38 Europe/Berlin] ERROR: Failed to connect socket: php_network_getaddresses: getaddrinfo failed: Name or service not known ()
[03-Jan-2018 21:49:19 Europe/Berlin] ERROR: php_network_getaddresses: getaddrinfo failed: Name or service not known (0)
[03-Jan-2018 21:49:19 Europe/Berlin] ERROR: Failed to connect socket: php_network_getaddresses: getaddrinfo failed: Name or service not known ()
[03-Jan-2018 21:49:32 Europe/Berlin] ERROR: php_network_getaddresses: getaddrinfo failed: Name or service not known (0)
[03-Jan-2018 21:49:32 Europe/Berlin] ERROR: Failed to connect socket: php_network_getaddresses: getaddrinfo failed: Name or service not known ()
[03-Jan-2018 21:55:22 Europe/Berlin] ERROR: Connection timed out (110)
[03-Jan-2018 21:55:22 Europe/Berlin] ERROR: Failed to connect socket: Connection timed out ()
[03-Jan-2018 21:57:29 Europe/Berlin] ERROR: Connection timed out (110)
[03-Jan-2018 21:57:29 Europe/Berlin] ERROR: Failed to connect socket: Connection timed out ()
[03-Jan-2018 21:58:12 Europe/Berlin] ERROR: Invalid response code received from server (454)
[03-Jan-2018 21:58:22 Europe/Berlin] ERROR: Connection timed out (110)
[03-Jan-2018 21:58:22 Europe/Berlin] ERROR: Failed to connect socket: Connection timed out ()
[03-Jan-2018 21:58:22 +0100]: <1bs3ck2m> SMTP Error: Connection failed: Failed to connect socket: Connection timed out in /var/www/html/lasserh.dk/roundcubemail/program$
[03-Jan-2018 21:58:26 Europe/Berlin] ERROR: Invalid response code received from server (454)
[03-Jan-2018 22:05:55 Europe/Berlin] ERROR: php_network_getaddresses: getaddrinfo failed: Name or service not known (0)
[03-Jan-2018 22:05:55 Europe/Berlin] ERROR: Failed to connect socket: php_network_getaddresses: getaddrinfo failed: Name or service not known ()
[03-Jan-2018 22:22:19 Europe/Berlin] ERROR: php_network_getaddresses: getaddrinfo failed: Name or service not known (0)
[03-Jan-2018 22:22:19 Europe/Berlin] ERROR: Failed to connect socket: php_network_getaddresses: getaddrinfo failed: Name or service not known ()
[03-Jan-2018 22:29:17 Europe/Berlin] ERROR: php_network_getaddresses: getaddrinfo failed: Name or service not known (0)
[03-Jan-2018 22:29:17 Europe/Berlin] ERROR: Failed to connect socket: php_network_getaddresses: getaddrinfo failed: Name or service not known ()
[03-Jan-2018 22:30:11 Europe/Berlin] ERROR: Connection refused (111)
[03-Jan-2018 22:30:11 Europe/Berlin] ERROR: Failed to connect socket: Connection refused ()
[03-Jan-2018 22:31:02 Europe/Berlin] ERROR: Connection refused (111)
[03-Jan-2018 22:31:02 Europe/Berlin] ERROR: Failed to connect socket: Connection refused ()
[03-Jan-2018 22:31:44 Europe/Berlin] ERROR: Connection refused (111)
[03-Jan-2018 22:31:44 Europe/Berlin] ERROR: Failed to connect socket: Connection refused ()
[03-Jan-2018 22:32:14 Europe/Berlin] ERROR: Invalid response code received from server (454)
[03-Jan-2018 22:32:29 Europe/Berlin] ERROR: Invalid response code received from server (454)
[03-Jan-2018 22:33:17 Europe/Berlin] ERROR: fsockopen(): unable to connect to ssl://localhost:25 (Unknown error) (0)
[03-Jan-2018 22:33:17 Europe/Berlin] ERROR: Failed to connect socket: fsockopen(): unable to connect to ssl://localhost:25 (Unknown error) ()
[03-Jan-2018 22:41:24 Europe/Berlin] ERROR: Invalid response code received from server (454)

Thank you for any help.

[SKaero]

You should look at your mail server log to see what that error code means.

[lruneh]

Hi and thanks for helping out.

The mail server logs final lines  say (nothing about the error 454 in the entire /var/log/mail.log):

Jan  4 10:15:24 Blacknight postfix/smtpd[21084]: cannot load Certification Authority data, CAfile="/etc/postfix/ssl/cakey.pem": disabling TLS support
Jan  4 10:15:24 Blacknight postfix/smtpd[21084]: connect from localhost[127.0.0.1]
Jan  4 10:15:24 Blacknight postfix/smtpd[21084]: warning: SASL authentication failure: cannot connect to saslauthd server: No such file or directory
Jan  4 10:15:24 Blacknight postfix/smtpd[21084]: warning: localhost[127.0.0.1]: SASL LOGIN authentication failed: generic failure
Jan  4 10:15:24 Blacknight postfix/smtpd[21084]: disconnect from localhost[127.0.0.1] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4

I don't know why the CAfile cant be loaded, the path seems correct. Is it a permissions problem maybe?
Any help is much appreciated

**Update**
I can send mail using telnet, which I asume proves it's something wrong with my settings in Roundcube.

[SKaero]

So the problem is with your mail server being unable to saslauthd, you should investigate further into why that is happening.

[rabiyajamal45]

Thanks friends!






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