Description: ------------ There is a problem with Russian encoding, when I encode 'From' header field, using mime (which used PHP function: iconv_mime_encode), I get something like this: =?WINDOWS-1251?Q?=C0=F0=F2=E5=EC<mad=5Ffobos@mscript.ru>?= And this failed on validation, while execute send method of Mail class... I checked code, and seems there is a problem, because there is "?=" after e-mail address (but I guess it's right, because it's result of iconv encoding). I seen this bug already, but didn't found any good answer on it. Test script: --------------- $charsets = Array('text_charset' => 'WINDOWS-1251', 'html_charset' => 'WINDOWS-1251', 'head_charset' => 'WINDOWS-1251'); $headers = Array( 'From' => 'Артем<mad_fobos@mscript.ru>', 'To' => 'Артем<mad_fobos@mscript.ru>', 'Subject' => 'test' ); $mime = new Mail_mime(); $hdrs = $mime->headers($headers); $res = Mail_RFC822::parseAddressList($hdrs['From']); print_r($res); Expected result: ---------------- Can't send mail to customer: Validation failed for: =?WINDOWS-1251?Q?=C0=F0=F2=E5=EC<mad=5Ffobos@mscript.ru>?=

As far as I understand RFC2047 correctly the bug is in iconv_mime_encode() or whatever method is used to encode the headers. The address is included in the 'encoded-word' and therefore interpreted as text. See examples in section 8: http://tools.ietf.org/html/rfc2047#section-8 The address has to be outside of the encoded-word so programms that are not capable of doing mime can work with the header.

Thank you for taking the time to write to us, but this is not a bug. Uwe's analysis is correct. Section 5 of RFC 2047 explicitly says: "An 'encoded-word' MUST NOT appear in any portion of an 'addr-spec'."