Syntax warnings are used by the Address Quality and Address Syntax checks to communicate syntax problems found while checking an e-mail address. The checks then contain message codes to identify the problem.
The initial set of message codes is documented here. While the messages of the normal syntax check (synm… codes) are fixed, the extended systax check (extm… codes) uses an editable rulebase. Please check this rulebase for additions and changes.
Syntax warning codes for the normal syntax check:
| Code | Explanation |
|---|---|
| synm001 | No ‘@’ found |
| synm002 | No local part (mailbox name) found |
| synm003 | No domain name found |
| synm004 | Local part contains non-ASCII characters |
| synm005 | Domain name contains non-ASCII characters |
| synm006 | Invalid address format |
| synm007 | Invalid mailbox name |
| synm008 | Invalid domain name |
| synm009 | Invalid top level domain (TLD) |
| synm010 | Invalid IP address format |
| synm011 | More than one ‘@’ found |
| synm012 | The top level domain (TLD) can only contain letters and must have a minimum length of two. |
| synm013 | The local part can’t be longer than 64 characters |
| synm014 | The domain name can’t be longer than 254 characters |
| synm015 | The e-mail address can’t be longer than 254 characters |
| synm016 | Invalid domain name (IRI) according to RFC 3490 |
| synm017 | The domain name contained Unicode characters and was decoded |
| synm018 | The local part contained Unicode characters and was decoded |
Initial set of syntax warning codes for the extended syntax check:
| Code | Explanation |
|---|---|
| extm001 | The mailbox length must be between 3-32 characters |
| extm002 | Only letters (a-z) and digits (0-9) are allowed |
| extm003 | The first character must be a letter |
| extm004 | Only letters, digits and punctuation characters dot, hyphen and underscore are allowed |
| extm005 | Multiple occurences of punctuation characters dot, hyphen and underscore are not allowed |
| extm006 | The punctuation characters dot, hyphen and underscore are not allowed at the beginning or end |
| extm007 | Dots are not allowd at the end |
| extm008 | The mailbox length must be between 3-50 characters |
| extm009 | The mailbox length must be between 5-40 characters |
| extm010 | The mailbox length must be between 5-30 characters |
| extm011 | The mailbox length must be between 4-32 characters |
| extm012 | Only letters, digits and punctuation characters dot and underscore are allowed |
| extm013 | Only one dot is allowed |
| extm014 | The mailbox length must be between 2-50 characters |
| extm015 | The mailbox length must be between 3-40 characters |
| extm016 | Mutiple occurences of dots are not allowed |
| extm017 | The mailbox length must be between 2-30 characters |
| extm018 | Only letters, digits and punctuation characters dot, hyphen, underscore, plus, minus, slash and ampersand are allowed |
| extm019 | The mailbox length must be between 6-30 characters |
| extm020 | Only letters, digits and the punctuation character dot are allowed |
| extm021 | The mailbox length must be between 3-20 characters |
| extm022 | The mailbox length must be between 1-64 characters |
| extm023 | The mailbox length must be between 6-20 characters |
| extm024 | The mailbox length must be larger than 2 |
| extm025 | The mailbox length must be between 2-31 characters |
| extm026 | The first character must be either a letter or a digit |
| extm027 | Only letters and dits are allowed at the beginning or end |
| extm028 | Multiple occurences of underscores are not allowed |
| extm029 | Dots are not allowed at the beginning or end |
| extm030 | The first chracter must be either a letter or a digit |