It appears that Slavko via mailop <li...@slavino.sk> said: >+ dnspython requires extra effort to get it works with IDNA2008 > and U-labels (by default it encodes "ß" as "ss")
Yeah, the python encodings.idna library has never been updated past IDNA2003 for reasons I find unpersuasive. If you import the external idna library, which is maintained by one of the people at ICANN who manage the root zone, you get proper IDN2008 support. >+ aiodns by default works with IDNA2008, thus no extra care is > needed >+ both are able to use underscored labels (eg. _dmarc), in contrast > of idna library, which rejects that domain name with invalid char That is correct. IDNA is only for encoding hostnames, and hostnames do not allow underscores. For a long discussion of why IDNA is the way it is, see https://www.ietf.org/archive/id/draft-klensin-idna-rfc5891bis-07.html R's, John _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
