Jan Mikus wrote:
Recipient address "Jan Mikuš mikus@itcomputers.cz" after encoding return "=?UTF-8?Q?Jan=20Miku=C5=A1=20mikus@itcomputers.cz?=" (right is "=?UTF-8?Q?Jan=20Miku=C5=A1?= mikus@itcomputers.cz") and Postfix this header encode to "=?UTF-8?Q?Jan=20Miku=C5=A1=20 mikus@itcomputers.cz,\n ?=@arachne.itcomputers.cz".
The problem here is the quotes. "Jan Mikuš mikus@itcomputers.cz" is a quoted-string, and if if you place it in an RFC2822 To: header field it will be parsed as just a local-part. With proper quoting, the field should be: "Jan Mikuš" mikus@itcomputers.cz
Bob