Mailpress bug

[Aleksey Kontsevich]

Hi,

MP 5.x have bug: if new user subscribed with Russian name then every time MP send letter to him (confirmation or newsletter) Internet provider Mail Delivery System sends error message back like following:

Subject: Mail failure - malformed recipient address
Body:


  =?UTF-8?Q?=D0=98=D1=80=D0=B8=D0=BD=D0=B0=D0=A7=D0=B5=D1=80?=\n =?UTF-8?Q?=D0=BA=D0=B0=D1=88=D0=B8=D0=BD=D0=B0?= <some...@yandex.ru>\n Subject: =?UTF-8?Q?=5B=D0=94=D1=80=D0=B5=D0=B2=D0=BE_=D0=96?=\n =?UTF-8?Q?=D0=B8=D0=B7=D0=BD=D0=B8=5D?= some_user@yandex.ru confirmed\n Message-ID: <3ff25de594096f25a1cdf7519f4780b7@my_domain.ru>\n Date: Wed, 29 Aug 2018 08:50:35 +0000\n From: =?UTF-8?Q?=D0=90=D0=BB=D0=B5=D0=BA=D1=81=D0=B5=D0=B9_?=\n =?UTF-8?Q?=D0=9A=D0=BE=D0=BD=D1=86=D0=B5=D0=B2=D0=B8=D1=87?=\n <info@my_doamain.ru>\n MIME-Version: 1.0\n Content-Type: multipart/alternative;\n boundary="_=_swift_v4_1535532635_4ccdcedaffd18fe8f1f7faf0a225b63c_=_"\n \n \n --_=_swift_v4_1535532635_4ccdcedaffd18fe8f1f7faf0a225b63c_=_\n Content-Type: text/plain; charset=UTF-8\n Content-Transfer-Encoding: quoted-printable\n \n =D0=94=D1=80=D0=B5=D0=B2=D0=BE =D0=96=D0=B8=D0=B7=D0=BD=D0=B8\n =D0=91=\n =D0=BB=D0=BE=D0=B3 =D0=BE=D0=B1 =D0=A3=D1=87=D0=B5=D0=BD=D0=B8=\n =D0=B8 =D0=94=D1=80=D0=B5=D0=B2=D0=BE =D0=96=D0=B8=D0=B7=D0=BD=\n =D0=B8 (=D0=94=D1=80=D0=B5=D0=B2=D0=BE =D0=A1=D0=B5=D1=84=\n =D0=B8=D1=80=D0=BE=D1=82) =D0=90=D1=80=D0=BA=D0=B0=D0=B4=D0=B8=\n =D1=8F =D0=9F=D0=B5=D1=82=D1=80=D0=BE=D0=B2=D0=B0, =D0=A3=\n =D1=87=D0=B5=D0=BD=D0=B8=D0=B8 =D0=93=D1=80=D0=B8=D0=B3=D0=BE=D1=80=\n =D0=B8=D1=8F =D0=93=D1=80=D0=B0=D0=B1=D0=BE=D0=B2=D0=BE=D0=B3=D0=BE=\n =D0=BE =D0=A1=D0=BF=D0=B0=D1=81=D0=B5=D0=BD=D0=B8=D0=B8 =\n =D0=B8 =D0=93=D0=B0=D1=80=D0=BC=D0=BE=D0=BD=D0=B8=D1=87=D0=BD=D0=BE=\n =D0=BC =D0=A0=D0=B0=D0=B7=D0=B2=D0=B8=D1=82=D0=B8=D0=B8, =\n =D0=A3=D1=87=D0=B5=D0=BD=D0=B8=D0=B8 =D0=98=D0=B3=D0=BE=D1=80=D1=8F=\n =D0=90=D1=80=D0=B5=D0=BF=D1=8C=D0=B5=D0=B2=D0=B0 =D0=B8 =\n =D0=B4=D1=80=D1=83=D0=B3=D0=B8=D1=85 =D0=B4=D1=80=D1=83=D0=B6=D0=B5=\n =D1=81=D1=82=D0=B2=D0=B5=D0=BD=D0=BD=D1=8B=D1=85 =D0=B8=D0=BC =\n =D0=B8 =D0=BE=D0=B1 =D0=B8=D1=85 =D1=81=D0=B8=D0=BD=D1=82=\n =D0=B5=D0=B7=D0=B5. =D0=9E=D0=BF=D1=8B=D1=82, =D1=82=\n =D0=B5=D1=85=D0=BD=D0=BE=D0=BB=D0=BE=D0=B3=D0=B8=D0=B8, =D0=BE=\n =D1=82=D0=B7=D1=8B=D0=B2=D1=8B, =D1=81=D1=82=D0=B0=D1=82=D1=8C=\n =D0=B8, =D0=BF=D1=80=D0=B8=D1=82=D1=87=D0=B8, =D0=B8=\n =D0=BD=D1=82=D0=B5=D1=80=D0=BD=D0=B5=D1=82-=D0=BA=D0=BE=D0=BD=D1=84=\n =D0=B5=D1=80=D0=B5=D0=BD=D1=86=D0=B8=D0=B8, =D1=81=D1=82=D0=B8=\n =D1=85=D0=B8, =D0=B0=D0=BD=D0=BE=D0=BD=D1=81=D1=8B =D0=BA=\n =D1=83=D1=80=D1=81=D0=BE=D0=B2 =D0=B8 =D1=81=D0=B5=D0=BC=D0=B8=\n =D0=BD=D0=B0=D1=80=D0=BE=D0=B2 =D0=B8 =D0=B4=D1=80.\n \n * ~~~~~~~=\n ~~~~~~~~~~ *\n ! Congratulations ! !\n * ~~~~~~~~~~~~~~~~~ *\n 29.=\n 08.2018\n \n You are now a subscriber of : [http://my_domain=\n .ru/wp-content/plugins/mailpress/mp-includes/action.php?tg=3Dl&mm=3D3314=\n &co=3Dp&us=3Dafb654dee381c6d6c9c4db19cc1ca954].\n \n

...

*@my_domain.ru - my site email, <some...@yandex.ru> - subscriber email with prepended with Russian characters name. No problem with English name subscribers

Hope this will be fixed in 6.0