Re: [mailop] Looking for EarthLink Contact
It appears that Chris Adams via mailop said: >-=-=-=-=-=- >-=-=-=-=-=- > >Is there anybody from EarthLink who can contact me off-list? >We are seeing emails sent to EarthLink recipients have the From header >domain overwritten with the CNAME the domain points to and would like to >discuss. See RFC 1123 section 5.2.1. It is mandatory to resolve a CNAME in the MAIL FROM and RCPT TO commands in the SMTP session, and it is fairly common to resolve them in the addresses in the message header so they match what is in the envelope. Or to put it another way, if the domains in your mail are CNAMEs, don't be surprised when they get de-CNAMEd. That's not all that common but it is also not a bug. R's, John ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Looking for EarthLink Contact
On 2022-03-01 at 11:00:14 UTC-0500 (Tue, 1 Mar 2022 10:00:14 -0600) Chris Adams via mailop is rumored to have said: Is there anybody from EarthLink who can contact me off-list? We are seeing emails sent to EarthLink recipients have the From header domain overwritten with the CNAME the domain points to and would like to discuss. FWIW, that's a normal Sendmail behavior. It is arguably correct, given a pedantically narrow concept of what CNAME records are supposed to be for. Since the CNAME overrides any other record with the same label, it SHOULD be possible to canonicalize domains in all circumstances. (Yes, I am quite aware of the edge cases.) -- Bill Cole b...@scconsult.com or billc...@apache.org (AKA @grumpybozo and many *@billmail.scconsult.com addresses) Not Currently Available For Hire ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
Re: [mailop] Looking for EarthLink Contact
I'll ping you offline, Chris. Udeme On Tue, Mar 1, 2022 at 11:36 AM Chris Adams via mailop wrote: > Is there anybody from EarthLink who can contact me off-list? > We are seeing emails sent to EarthLink recipients have the From header > domain overwritten with the CNAME the domain points to and would like to > discuss. > > Thanks. > ~ Chris > ___ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop > ___ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
