Hi Wietse, Yes, it hard to covert except for some "guessing" but still not 100% accurately. Maybe BASE64 or HEX encode is another option.
Regards, King 2015-12-28 21:34 GMT+08:00 Wietse Venema <wie...@porcupine.org>: > King Cao: > > Dears, > > > > Postfix will convert the non-printable characters into "?" before > logging. > > Is there any way to conver those non-printable characters to UTF8 > insteaded > > of replacing with "?" ? > > It's not possible to convert from characterset X to UTF-8, without > knowing what X is. > > With smtputf8_enable=yes, Postfix >= 3.0 will log UTF-8 text as > UTF-8 text. It will not convert other text to UTF-8, because there > is no characterset information. > > Wietse >