diff --git a/postfix.grok b/postfix.grok
index 4630d18..6337631 100644
--- a/postfix.grok
+++ b/postfix.grok
@@ -97,6 +97,7 @@ POSTFIX_SMTP_SSLCONNERR SSL_connect error to %{POSTFIX_RELAY_INFO}: %{POSTFIX_LO
 POSTFIX_SMTP_LOSTCONN %{POSTFIX_QUEUEID:postfix_queueid}: %{POSTFIX_LOSTCONN:postfix_smtp_lostconn_data} with %{POSTFIX_RELAY_INFO}( while %{POSTFIX_LOSTCONN_REASONS:postfix_smtp_lostconn_reason})?
 POSTFIX_SMTP_TIMEOUT %{POSTFIX_QUEUEID:postfix_queueid}: conversation with %{POSTFIX_RELAY_INFO} timed out( while %{POSTFIX_LOSTCONN_REASONS:postfix_smtp_lostconn_reason})?
 POSTFIX_SMTP_RELAYERR %{POSTFIX_QUEUEID:postfix_queueid}: host %{POSTFIX_RELAY_INFO} said: %{GREEDYDATA:postfix_smtp_response} \(in reply to %{POSTFIX_SMTP_STAGE:postfix_smtp_stage} command\)
+POSTFIX_SMTP_SSLAUTHERR %{POSTFIX_QUEUEID:postfix_queueid}: SASL authentication failed; server %{POSTFIX_RELAY_INFO} said: %{GREEDYDATA:postfix_smtp_response}
 POSTFIX_SMTP_UTF8 host %{POSTFIX_RELAY_INFO} offers SMTPUTF8 support, but not 8BITMIME
 POSTFIX_SMTP_PIX %{POSTFIX_QUEUEID:postfix_queueid}: enabling PIX workarounds: %{DATA:postfix_pix_workaround} for %{POSTFIX_RELAY_INFO}
 
@@ -120,7 +121,7 @@ POSTFIX_PIPE %{POSTFIX_PIPE_ANY}
 POSTFIX_POSTSCREEN %{POSTFIX_PS_CONNECT}|%{POSTFIX_PS_ACCESS}|%{POSTFIX_PS_NOQUEUE}|%{POSTFIX_PS_TOOBUSY}|%{POSTFIX_PS_CACHE}|%{POSTFIX_PS_DNSBL}|%{POSTFIX_PS_VIOLATIONS}|%{POSTFIX_WARNING}
 POSTFIX_DNSBLOG %{POSTFIX_DNSBLOG_LISTING}|%{POSTFIX_WARNING}
 POSTFIX_ANVIL %{POSTFIX_ANVIL_CONN_RATE}|%{POSTFIX_ANVIL_CONN_CACHE}|%{POSTFIX_ANVIL_CONN_COUNT}
-POSTFIX_SMTP %{POSTFIX_SMTP_DELIVERY}|%{POSTFIX_SMTP_CONNERR}|%{POSTFIX_SMTP_SSLCONNERR}|%{POSTFIX_SMTP_LOSTCONN}|%{POSTFIX_SMTP_TIMEOUT}|%{POSTFIX_SMTP_RELAYERR}|%{POSTFIX_TLSCONN}|%{POSTFIX_WARNING}|%{POSTFIX_SMTP_UTF8}|%{POSTFIX_TLSVERIFICATION}|%{POSTFIX_SMTP_PIX}
+POSTFIX_SMTP %{POSTFIX_SMTP_DELIVERY}|%{POSTFIX_SMTP_CONNERR}|%{POSTFIX_SMTP_SSLCONNERR}|%{POSTFIX_SMTP_SSLAUTHERR}|%{POSTFIX_SMTP_LOSTCONN}|%{POSTFIX_SMTP_TIMEOUT}|%{POSTFIX_SMTP_RELAYERR}|%{POSTFIX_TLSCONN}|%{POSTFIX_WARNING}|%{POSTFIX_SMTP_UTF8}|%{POSTFIX_TLSVERIFICATION}|%{POSTFIX_SMTP_PIX}
 POSTFIX_DISCARD %{POSTFIX_DISCARD_ANY}|%{POSTFIX_WARNING}
 POSTFIX_LMTP %{POSTFIX_SMTP}
 POSTFIX_PICKUP %{POSTFIX_KEYVALUE}
diff --git a/test/smtp_0032.yaml b/test/smtp_0032.yaml
new file mode 100644
index 0000000..3248251
--- /dev/null
+++ b/test/smtp_0032.yaml
@@ -0,0 +1,7 @@
+pattern: "^%{POSTFIX_SMTP}$"
+data: "D0F29603B4: SASL authentication failed; server xyz.example.com[1.2.3.4] said: 535 5.7.8 Error: authentication failed: authentication failure"
+results:
+    postfix_queueid: D0F29603B4
+    postfix_relay_hostname: xyz.example.com
+    postfix_relay_ip: 1.2.3.4
+    postfix_smtp_response: "535 5.7.8 Error: authentication failed: authentication failure"