http://www.sourcebench.com/2007/10/24/validate-email-address/ Thu, 20 Nov 2008 22:17:01 +0000 http://wordpress.org/?v=2.2 http://www.sourcebench.com/2007/10/24/validate-email-address/#comment-374 Freddy Bob Mon, 11 Feb 2008 22:03:31 +0000 http://www.sourcebench.com/2007/10/24/validate-email-address/#comment-374 I am afraid that your regular expression is not quite complete. This is the full regex as described by RFC 822: (?:(?:\r\n)?[ \t])*(?:(?:(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \ t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?: \r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(? :(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37 \177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.) *\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\1 77]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\ ](?:(?:\r\n)?[ \t])*))*|(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t ])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\ r\n)?[ \t])*)*\@,;:\\".\[\] 00-37\177]+(?:( ?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\ r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?: (?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\ n)?[ \t])*))*(?:,@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?: (?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\ n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(? :\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n) ?[ \t])*))*)*:(?:(?:\r\n)?[ \t])*)?(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(? :\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t] ))*"(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\ 177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:( ?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\] \r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] \ 000-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r \\]|\\.)*\](?:(?:\r\n)?[ \t])*))*\>(?:(?:\r\n)?[ \t])*)|(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]| \\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)*:(?:(?:\r\n)?[ \t])*(?:(?:(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]) )|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@ ,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*))*@(?: (?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|( ?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(? :\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?= [\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*|(?:[^() @,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]])) |"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)*\@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["() @,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \ t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@, ;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*(?:,@(?:(?:\r\n)?[ \ t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@, ;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t] )*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;: \\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*)*:(?:(?:\r\n)?[ \t])* )?(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;: \\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)(?:\.(?:( ?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(? =[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t ])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*) (?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t ])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))* \>(?:(?:\r\n)?[ \t])*)(?:,\s*(?:(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r \n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))* "(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177 ]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\ r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\ \]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00 -37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\] |\\.)*\](?:(?:\r\n)?[ \t])*))*|(?:[^()@,;:\\".\[\] 00-37\177]+(?:(?:(?:\r\ n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n)?[ \t]))*" (?:(?:\r\n)?[ \t])*)*\@,;:\\".\[\] 00-37\17 7]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\] (?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177] +(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](? :(?:\r\n)?[ \t])*))*(?:,@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177] +(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](? :(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 00-37\177]+( ?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:( ?:\r\n)?[ \t])*))*)*:(?:(?:\r\n)?[ \t])*)?(?:[^()@,;:\\".\[\] 00-37\177]+( ?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(?:(?:\r\n )?[ \t]))*"(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\".\[\] 0 0-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|"(?:[^\"\r\\]|\ \.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\ \".\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(? :[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\" .\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()@,;:\\".\[\]]))|\[(?:[ ^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*\>(?:(?:\r\n)?[ \t])*))*)?;\s*) I am afraid that your regular expression is not quite complete. This is the full regex as described by RFC 822:
(?:(?:\r\n)?[ \t])*(?:(?:(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \
t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*”(?:(?:
\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?
:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[
\t]))*”(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37
\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)
*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\1
77]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\
](?:(?:\r\n)?[ \t])*))*|(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t
])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*”(?:(?:\
r\n)?[ \t])*)*\@,;:\\”.\[\] 00-37\177]+(?:(
?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\
r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:
(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\
n)?[ \t])*))*(?:,@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:
(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\
n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?
:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)
?[ \t])*))*)*:(?:(?:\r\n)?[ \t])*)?(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?
:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]
))*”(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\
177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(
?:\r\n)?[ \t]))*”(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\]
00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]
\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] \
000-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r
\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*\>(?:(?:\r\n)?[ \t])*)|(?:[^()@,;:\\”.\[\]
00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|
\\.|(?:(?:\r\n)?[ \t]))*”(?:(?:\r\n)?[ \t])*)*:(?:(?:\r\n)?[ \t])*(?:(?:(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]])
)|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*”(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[
\t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@
,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*”(?:(?:\r\n)?[ \t])*))*@(?:
(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(
?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?
:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=
[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*|(?:[^()
@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))
|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*”(?:(?:\r\n)?[ \t])*)*\@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()
@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \
t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,
;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*(?:,@(?:(?:\r\n)?[ \
t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,
;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t]
)*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:
\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*)*:(?:(?:\r\n)?[ \t])*
)?(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:
\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*”(?:(?:\r\n)?[ \t])*)(?:\.(?:(
?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?
=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*”(?:(?:\r\n)?[ \t
])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[
\t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)
(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t
])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*
\>(?:(?:\r\n)?[ \t])*)(?:,\s*(?:(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r
\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*
“(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177
]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\
r\n)?[ \t]))*”(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\]
00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\
\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00
-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]
|\\.)*\](?:(?:\r\n)?[ \t])*))*|(?:[^()@,;:\\”.\[\] 00-37\177]+(?:(?:(?:\r\
n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n)?[ \t]))*”
(?:(?:\r\n)?[ \t])*)*\@,;:\\”.\[\] 00-37\17
7]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\]
(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]
+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?
:(?:\r\n)?[ \t])*))*(?:,@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]
+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?
:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 00-37\177]+(
?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[^\[\]\r\\]|\\.)*\](?:(
?:\r\n)?[ \t])*))*)*:(?:(?:\r\n)?[ \t])*)?(?:[^()@,;:\\”.\[\] 00-37\177]+(
?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\\.|(?:(?:\r\n
)?[ \t]))*”(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”.\[\] 0
0-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|”(?:[^\”\r\\]|\
\.|(?:(?:\r\n)?[ \t]))*”(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()@,;:\
\”.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?
:[^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()@,;:\\”
.\[\] 00-37\177]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[”()@,;:\\”.\[\]]))|\[(?:[
^\[\]\r\\]|\\.)*\](?:(?:\r\n)?[ \t])*))*\>(?:(?:\r\n)?[ \t])*))*)?;\s*)

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