April 29, 2023 at 12:38 AM, "Jaroslaw Rafa via Postfix-users" <postfix-users@postfix.org> wrote:
> > Dnia 28.04.2023 o godz. 15:59:53 Gerd Hoerst via Postfix-users pisze: > > > > > question 1st : is it a good idea to reject any email which is not > > sent from a domain (means sen...@domain.tld) any other like > > sen...@sub.domain.tld or sub.sub.domain.tld is rejected ? > > > > As others have said, it's a total misunderstanding. > > Mail coming from subdomains is a perfectly normal thing. > > For example, many big corporations and/or universities do not have a single > top-level mail service for the whole entity, but they have separate mail > servers at department levels. It's totally normal that you will see emails > from u...@department.company.com. > > Also take into account that many countries use two-level domain registration > scheme - for example someone already mentioned UK, where you have *.co.uk > for companies or *.ac.uk for universities. Also my country uses for example > *.com.pl, *.edu.pl (not mentioning *.gov.pl !) addressing scheme - to be > more confusing ;), in parallel to direct registrations in *.pl, and to > geographical per-city scheme like *.krakow.pl, *.waw.pl, *.gda.pl etc. > > And please look at my email address as well :) > -- > Besides something.eu.org, here *.co.jp, *.ne.jp, *.com.hk, *.co.in are quite common domains in regular businesses. Regards -- https://kenpeng.pages.dev/ _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
