In message <[email protected]>, =?UTF-8?B?WW9uZ2h1YSBQZW5n?= writes: > Hi, > > @mail.china.com does provide free email service, and they have a large > number of user base. > And their MX setup: > > mail.china.com. 297 IN CNAME mail.china.com.cachecn.com. > mail.china.com.cachecn.com. 97 IN MX 10 mx-mail-china-com.icoremail.net. > > Will some email deliver systems break due to this setup? Thanks.
MTA's that follow RCF 822 will rewrite [email protected] as [email protected]. MTA's that follow RFC 2822 or RFC 5322 won't preform the rewrite. The better solution for this would be two MX records. mail.china.com. IN MX 10 mx-mail-china-com.icoremail.net. mail.china.com.cachecn.com. IN MX 10 mx-mail-china-com.icoremail.net. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: [email protected] _______________________________________________ dns-operations mailing list [email protected] https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs
