Hi, We had the same issue long time ago, we solved this issue with some postfix configuration, we didn't find a solution on the Cyrus side : message_strip_characters = \0 regards, Sébastien -----Message d'origine----- De : Paul van der Vlis <paul@xxxxxxxxxxxxx> Envoyé : lundi 23 mai 2022 14:10 À : info@xxxxxxxxxxxxxxxxxx Objet : Big company sents 0 character in voicemail messages Hello, Here in the Netherlands the biggest telephone company (KPN) does sent voicemail messages with a 0 character in the text-part. Something like this, look for <C0><80>: ----------- <headers> --MM3-12345-789 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Je hebt een nieuwe voicemail ontvangen van 06xxxxxxxx op 21/05/2022 om 22:51:35 uur. Het bericht duurt 9 seconden.<C0><80> --MM3-12345-789 Content-Type: audio/mpeg Content-Disposition:attachment; filename= "voicemail.mp3" Content-Transfer-Encoding:base64 //uQRAAAAAAAAAAAAAAAAAAAA (...) --MM3-12345-789-- ------------- For so far I know <C0><80> is a overlong coded nulcharacter: https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FUTF-8%23Modified_UTF-8&data=05%7C01%7Csebastien.michel%40worldline.com%7C300a94b08a8b42f6c30a08da3cb54311%7Cfda9decfe89243ac9d9f1a493f9f98d0%7C0%7C0%7C637889047861906716%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=2cnLJ5U2njWOMjOBInbXMpntS93IM%2Fc7CKZG6ppnit4%3D&reserved=0 Cyrus IMAP says: ---- May 21 14:10:34 sigmund postfix/lmtp[29862]: E5D0C2041C: to=<xxx@xxxxxxxxxxxxxxxxxx>, relay=mail.vandervlis.nl[/var/run/cyrus/socket/lmtp], delay=0.19, delays=0.14/0.02/0.03/0.01, dsn=5.6.0, status=bounced (host mail.vandervlis.nl[/var/run/cyrus/socket/lmtp] said: 554 5.6.0 Message contains NUL characters (in reply to end of DATA command)) ---- Some ideas what to do? With regards, Paul van der Vlis -- Paul van der Vlis Linux systeembeheer Groningen https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fvandervlis.nl%2F&data=05%7C01%7Csebastien.michel%40worldline.com%7C300a94b08a8b42f6c30a08da3cb54311%7Cfda9decfe89243ac9d9f1a493f9f98d0%7C0%7C0%7C637889047861906716%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=1iIDIMnCq5%2FIwd5wUGD3kgFrNhvnvUaVkYKMZ2Ih9No%3D&reserved=0 ------------------------------------------ Cyrus: Info Permalink: https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcyrus.topicbox.com%2Fgroups%2Finfo%2FTad030257997d8c5f-M3cf0dbb69214874db760e68c&data=05%7C01%7Csebastien.michel%40worldline.com%7C300a94b08a8b42f6c30a08da3cb54311%7Cfda9decfe89243ac9d9f1a493f9f98d0%7C0%7C0%7C637889047861906716%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=Ikn37WKANKkMtnYCmbxYzKOS6qa1aOP5CU6rSuHbZzc%3D&reserved=0 Delivery options: https://fra01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcyrus.topicbox.com%2Fgroups%2Finfo%2Fsubscription&data=05%7C01%7Csebastien.michel%40worldline.com%7C300a94b08a8b42f6c30a08da3cb54311%7Cfda9decfe89243ac9d9f1a493f9f98d0%7C0%7C0%7C637889047861906716%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=f7lzpo7wD%2FOL3xY3MhBrg%2FHaPH9CZOEZOz0tF20zBks%3D&reserved=0 ------------------------------------------ Cyrus: Info Permalink: https://cyrus.topicbox.com/groups/info/Tad030257997d8c5f-M4398cc95dbf6c83de274ecba Delivery options: https://cyrus.topicbox.com/groups/info/subscription
