{"id":2131,"date":"2022-08-30T15:22:18","date_gmt":"2022-08-30T15:22:18","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/01\/02\/postfix-returning-no-sasl-authentication-mechanisms-despite-mysql-auth-config-being-seemingly-valid-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:22:18","modified_gmt":"2022-08-30T15:22:18","slug":"postfix-returning-no-sasl-authentication-mechanisms-despite-mysql-auth-config-being-seemingly-valid-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/postfix-returning-no-sasl-authentication-mechanisms-despite-mysql-auth-config-being-seemingly-valid-collection-of-common-programming-errors\/","title":{"rendered":"Postfix returning “no SASL authentication mechanisms” despite mySQL auth config being seemingly valid-Collection of common programming errors"},"content":{"rendered":"

I am trying to set up a mail server that has multi domain support using Postfix+Dovecot+mySQL. I was following this guide.<\/p>\n

I seem to have everything set up and the server is sending the dovecot SSL cert (throwing a cert exception dialog in my client) however mail is not sending or receiving.<\/p>\n

\/var\/log\/mail_err returns this postfix error:<\/p>\n

\n

Connect to private\/auth failed: Connection refused<\/p>\n<\/blockquote>\n

\/var\/log\/mail.log is returning a bit more detail:<\/p>\n

Sep 25 19:33:58 localhost postfix\/postscreen[11483]: CONNECT from [MYIPADDRESS]:58837 to [MYSERVERIPADDRESS]:25\nSep 25 19:33:58 localhost postfix\/postscreen[11483]: PASS OLD [MYIPADDRESS]:58837\nSep 25 19:34:01 localhost postfix\/smtpd[11486]: connect from MYHOSTMASK[MYIPADDRESS]\nSep 25 19:34:01 localhost postfix\/smtpd[11486]: warning: SASL: Connect to private\/auth failed: Connection refused\nSep 25 19:34:01 localhost postfix\/smtpd[11486]: fatal: no SASL authentication mechanisms\nSep 25 19:34:02 localhost postfix\/master[4556]: warning: process \/usr\/lib\/postfix\/smtpd pid 11486 exit status 1\nSep 25 19:34:02 localhost postfix\/master[4556]: warning: \/usr\/lib\/postfix\/smtpd: bad command startup -- throttling\nSep 25 19:34:02 localhost postfix\/postscreen[11483]: CONNECT from [MYIPADDRESS]:58839 to [MYSERVERIPADDRESS]:25\nSep 25 19:34:02 localhost postfix\/postscreen[11483]: PASS OLD [MYIPADDRESS]:58839\nSep 25 19:35:02 localhost postfix\/smtpd[11780]: connect from MYHOSTMASK[MYIPADDRESS]\nSep 25 19:35:49 localhost dovecot: auth-worker: mysql(127.0.0.1): Connected to database mailserver\nSep 25 19:35:49 localhost dovecot: imap-login: Login: user=, method=PLAIN, rip=MYIPADDRESS, lip=MYSERVERIPADDRESS, mpid=11804, TLS\nSep 25 19:38:07 localhost postfix\/anvil[11379]: statistics: max connection rate 1\/60s for (submission:MYIPADDRESS) at Sep 25 19:28:57\nSep 25 19:38:07 localhost postfix\/anvil[11379]: statistics: max connection count 1 for (submission:MYIPADDRESS) at Sep 25 19:28:57\nSep 25 19:38:07 localhost postfix\/anvil[11379]: statistics: max cache size 2 at Sep 25 19:28:57\nSep 25 19:39:02 localhost postfix\/smtpd[11780]: lost connection after UNKNOWN from MYHOSTMASK[MYIPADDRESS]\nSep 25 19:39:02 localhost postfix\/smtpd[11780]: disconnect from MYHOSTMASK[MYIPADDRESS]\nSep 25 19:39:02 localhost postfix\/smtpd[11945]: connect from MYHOSTMASK[MYIPADDRESS]\nSep 25 19:39:03 localhost postfix\/smtpd[11945]: warning: SASL: Connect to private\/auth failed: Connection refused\nSep 25 19:39:03 localhost postfix\/smtpd[11945]: fatal: no SASL authentication mechanisms\nSep 25 19:39:04 localhost postfix\/master[4556]: warning: process \/usr\/lib\/postfix\/smtpd pid 11945 exit status 1\n<\/code><\/pre>\n
Again, I am not receiving or able to send mail. It does seem that postfix is crashing, what with the premature exit. I’m out of ideas and I’d really prefer not to wipe everything out and start the setup all over again. Any thoughts? This is a VPS running on Ubuntu 12.04<\/p>\n
EDIT<\/strong><\/p>\n
postconf -n output:<\/p>\n
alias_database = hash:\/etc\/aliases\nalias_maps = hash:\/etc\/aliases\nappend_dot_mydomain = no\nbiff = no\nconfig_directory = \/etc\/postfix\ninet_interfaces = all\ninet_protocols = ipv4\nmailbox_command = procmail -a \"$EXTENSION\"\nmailbox_size_limit = 0\nmydestination = localhost\nmyhostname = lightningcoders.com\nmynetworks = 127.0.0.0\/8 [::ffff:127.0.0.0]\/104 [::1]\/128\nmyorigin = \/etc\/mailname\nreadme_directory = no\nrecipient_delimiter = +\nrelayhost =\nsmtp_tls_session_cache_database = btree:${data_directory}\/smtp_scache\nsmtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)\nsmtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination\nsmtpd_sasl_auth_enable = yes\nsmtpd_sasl_path = private\/auth\nsmtpd_sasl_type = dovecot\nsmtpd_tls_auth_only = yes\nsmtpd_tls_cert_file = \/etc\/ssl\/certs\/dovecot.pem\nsmtpd_tls_key_file = \/etc\/ssl\/private\/dovecot.pem\nsmtpd_tls_session_cache_database = btree:${data_directory}\/smtpd_scache\nsmtpd_use_tls = yes\nvirtual_alias_maps = mysql:\/etc\/postfix\/mysql-virtual-alias-maps.cf\nvirtual_mailbox_domains = mysql:\/etc\/postfix\/mysql-virtual-mailbox-domains.cf\nvirtual_mailbox_maps = mysql:\/etc\/postfix\/mysql-virtual-mailbox-maps.cf\nvirtual_transport = lmtp:unix:private\/dovecot-lmtp\n<\/code><\/pre>\n
postfix master config:<\/p>\n
root@orion:~# cat \/etc\/postfix\/master.cf | grep ^smtp\nsmtp      inet  n       -       -       -       -       smtpd\nsmtp      inet  n       -       -       -       1       postscreen\nsmtpd     pass  -       -       -       -       -       smtpd\nsmtp      unix  -       -       -       -       -       smtp\n<\/code><\/pre>\n
EDIT 2:<\/strong><\/p>\n
root@orion:\/home\/jknipp# ls -ld \/var\/spool\/postfix\/private\/auth\nsrw-rw-rw- 1 postfix postfix 0 Sep 25 02:38 \/var\/spool\/postfix\/private\/auth\n<\/code><\/pre>\n
As for the dovecot config:<\/p>\n
2.0.19: \/etc\/dovecot\/dovecot.conf\n# OS: Linux 3.9.3-x86_64-linode33 x86_64 Ubuntu 12.04.3 LTS ext3\nauth_mechanisms = plain login\nmail_location = maildir:\/var\/mail\/vhosts\/%d\/%n\nmail_privileged_group = mail\npassdb {\n  args = \/etc\/dovecot\/dovecot-sql.conf.ext\n  driver = sql\n}\nprotocols = imap pop3 lmtp\nssl = required\nssl_cert =<\/code><\/pre>\n
Originally posted 2014-01-02 12:07:50. <\/small><\/p>","protected":false},"excerpt":{"rendered":"
I am trying to set up a mail server that has multi domain support using Postfix+Dovecot+mySQL. I was following this guide. I seem to have everything set up and the server is sending the dovecot SSL cert (throwing a cert exception dialog in my client) however mail is not sending or receiving. \/var\/log\/mail_err returns this […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2131","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2131","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=2131"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2131\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=2131"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=2131"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=2131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}