Versand von eMails bringt Fehlermeldung

Wenn ich eMails versenden möchte kommt immer eine Fehlermeldung vom Server:



> 17/01/2015, 09:38:12: SEND - authenticating (software CRAM-MD5)...

> 17/01/2015, 09:38:14: SEND - Server reports error. The response is: 5.7.8 Error: authentication failed:

> 17/01/2015, 09:38:16: SEND - Server reports error. The response is: 5.7.8 Error: authentication failed:

> 17/01/2015, 09:38:16: SEND - authenticating (login)...



Einstellungen im eMail Programm sind alle korrekt, habe ich durch den Hersteller prüfen lassen. Muss ein Server-Fehler sein. Was genau muss ich denn fixen?



Hier meine main.cf von Postfix:



myhostname = mail.ersetzt.com

myorigin = $myhostname

mydestination = $myhostname

mynetworks = 127.0.0.0/8



inet_protocols = ipv4

biff = no

append_dot_mydomain = no



alias_maps = hash:/etc/aliases

alias_database = hash:/etc/aliases



smtpd_banner = $myhostname ESMTP Mailserver

smtpd_helo_required = yes

smtpd_recipient_restrictions =

permit_sasl_authenticated,

permit_mynetworks,

reject_non_fqdn_sender,

reject_non_fqdn_recipient,

reject_unknown_sender_domain,

reject_unknown_recipient_domain,

reject_unverified_recipient,

reject_unauth_destination,

#check_policy_service inet:127.0.0.1:10023,

#check_policy_service inet:127.0.0.1:12525,

permit



strict_rfc821_envelopes = yes



smtpd_sasl_auth_enable = yes

smtpd_sasl_type = dovecot

smtpd_sasl_path = private/auth

smtpd_sasl_security_options = noanonymous

smtpd_sasl_local_domain =



smtp_sasl_auth_enable = no

broken_sasl_auth_clients = yes



virtual_mailbox_base = /var/www/mails/

virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual_mailbox_maps.cf

virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual_mailbox_domains.cf

virtual_alias_domains =

virtual_alias_maps = mysql:/etc/postfix/mysql-virtual_alias_maps.cf

virtual_uid_maps = static:2000

virtual_gid_maps = static:2000



dovecot_destination_recipient_limit = 1

virtual_transport = dovecot