search for: dmarc1

...fication. It looks like > users with gmail addresses are affected. > > CentOS admins are looking into this issue (I believe). > > Akemi I believe this is a DMARC issue. Yahoo, among other places, has set their dmarc records to p=reject: dig +short txt _dmarc.yahoo.com "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc_y_rua at yahoo.com;" So, if your mail hosting provider enforces dmarc,(gmail does) and you get mail from a list that doesn't rewrite the headers, and people from places like yahoo post to the list, you'll likely get some form of warning about being...

...I have you such an address, use it. Try to do > two things at the same time: Regular postings and "test DMARC postings". Hope this is wrapped. From web client. > Groeten > Geert Stappers > > $ host -t txt _dmarc.yahoo.com > _dmarc.yahoo.com descriptive text "v=DMARC1\; p=reject\; sp=none\; pct=100\; rua=mailto:dmarc-yahoo-rua at yahoo-inc.com, mailto:dmarc_y_rua at yahoo.com\;" p=reject is the annoying and aggressive part.

...via CentOS <centos at centos.org> > > On 06/15/2018 05:18 PM, Richard wrote: >> >> >> I believe this is a DMARC issue. Yahoo, among other places, has set >> their dmarc records to p=reject: >> >> dig +short txt _dmarc.yahoo.com >> "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc_y_rua at yahoo.com;" >> >> So, if your mail hosting provider enforces dmarc,(gmail does) and >> you get mail from a list that doesn't rewrite the headers, and >> people from places like yahoo post to the list, you'll likely...

...ill be messages from domains that have DMARC policy "reject". I have you such an address, use it. Try to do two things at the same time: Regular postings and "test DMARC postings". Groeten Geert Stappers $ host -t txt _dmarc.yahoo.com _dmarc.yahoo.com descriptive text "v=DMARC1\; p=reject\; sp=none\; pct=100\; rua=mailto:dmarc-yahoo-rua at yahoo-inc.com, mailto:dmarc_y_rua at yahoo.com\;" ----- message from mailman at zytor.com ----- Date: Sun, 04 Jan 2015 06:52:28 -0800 From: mailman at zytor.com To: syslinux-owner at zytor.com Subject: Bounce action notification...

...l addresses are affected. >> >> CentOS admins are looking into this issue (I believe). >> >> Akemi > > I believe this is a DMARC issue. Yahoo, among other places, has set > their dmarc records to p=reject: > > dig +short txt _dmarc.yahoo.com > "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc_y_rua at yahoo.com;" > > So, if your mail hosting provider enforces dmarc,(gmail does) and you > get mail from a list that doesn't rewrite the headers, and people > from places like yahoo post to the list, you'll likely get some form &g...

...ying about being Mark, and is trying to impersonate him. I can safely drop this message". > Is that about right? barclays.com has a DNS record setup that says all mail from this domain should be authenticated, the "p=reject" in here: $ dig _dmarc.barclays.com txt +short "v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua at emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf at emaildefense.proofpoint.com" This auth can either be by IP address of sending server (SPF) which is not going to work for mailing list messages, or by valid DKIM signature. The mail admins can choos...

( previous thread at http://www.syslinux.org/archives/2015-January/023050.html ) > > <info from="web interface mailman" extra_from="backend mailinglist software"> > dmarc_moderation_action Option > dmarc_moderation_action (privacy): Action to take when anyone posts > to the list from a domain with a DMARC Reject/Quarantine Policy. > >

...pop 14400 IN CNAME teo-en-ming.com. pop3 14400 IN CNAME teo-en-ming.com. imap 14400 IN CNAME teo-en-ming.com. webmail 14400 IN A 3.21.30.127 cpanel 14400 IN A 3.21.30.127 cwp 14400 IN A 3.21.30.127 www 14400 IN CNAME teo-en-ming.com. ftp 14400 IN CNAME teo-en-ming.com. _dmarc 14400 IN TXT "v=DMARC1; p=none" @ 14400 IN TXT "v=spf1 +a +mx +ip4:3.21.30.127 ~all" ns1.teo-en-ming.com. 14400 IN A 3.21.30.127 ns2.teo-en-ming.com. 14400 IN A 3.12.224.179 default._domainkey 14400 IN TXT "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDEXk5wQIfKJPjTkkj0yHGX8yIJOOrsOsvAqbqVa...

I don't know enough about DMARC to make any sense of what you just said... actually wait, maybe I get it. You're saying that email sent that I send to the list will land in your inbox with my address in the From header. But the recipient mail system will think to itself "this message couldn't possibly have come from Mark, because a cursory inspection of the routing history clearly