SpamAssassin rule
FROM_EXCESS_BASE64
From header needlessly encoded
+0.001 points
Combination of other tests (meta rule)
What FROM_EXCESS_BASE64 means
The From name is base64-encoded although it only contains plain characters.
The rule's description in SpamAssassin: “From: base64 encoded unnecessarily”
How to fix it
Only encode the sender name when it contains non-ASCII characters.
This rule adds almost nothing to the score by itself. It matters only together with other rules.
Does your email trigger FROM_EXCESS_BASE64?
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Open the email spam checkerRelated rules
INVALID_DATEInvalid Date header
MAILING_LIST_MULTILooks like mailing-list software
MISSING_DATENo Date header
MISSING_FROMNo From header
MISSING_HEADERSNo To header
MISSING_MIDNo Message-ID header
MISSING_SUBJECTNo subject
MSGID_FROM_MTA_HEADERMessage-ID added by a relay
REPLYTO_WITHOUT_TO_CCReply-To but no To or Cc
Frequently asked questions
What does FROM_EXCESS_BASE64 mean?
The From name is base64-encoded although it only contains plain characters.
How do I fix FROM_EXCESS_BASE64?
Only encode the sender name when it contains non-ASCII characters.
How many points does FROM_EXCESS_BASE64 add?
0.001 points in the default SpamAssassin ruleset (network tests on, Bayes off). A message is treated as spam from 5.0 points. Mail servers can change scores locally.