A number of people, on different forums, have been asking if anyone is seeing a higher bounce rate than usual with Yahoo. Not sure exactly what’s going on here. As I understand it, folks are talking with Yahoo about it. If I hear anything more, I’ll share.
For now, though, if you’re seeing a small increase in Yahoo bounces (or other weirdnesses) others are seeing something odd, too.
Sometimes I find it hard to find a new topic to write about. I decide I’m going to write about X and then realize I did, often more than once. Other times I think I can blog about some issue only to realize that it’s too complex to handle in a quick post. There are concepts or issues that need background or I have to work a little harder to explain them.
One thing I haven’t blogged about before is bounce handling. That particular topic falls into the other category of posts that take a lot of time to write and need a significant amount of work to make sense. I was even joking with my fellow panel members at EEC a few months ago about how that’s a post that so needs to be written but I’m avoiding it because it’s so hard. There’s so much to be conceptualized and explained and I realize it’s not a blog post but multiple blog posts, or a white paper or even a book.
So let’s start with some simple definitions. Those of you who work at ISPs are probably thinking of bounces in terms of accept than reject, that’s not exactly what I’m talking about here. I’m writing these for senders, who usually call rejects during the SMTP transaction bounces.
There are a number of different bounces that people are reporting due to Yahoo publishing a DMARC record of p=reject. I decided to put some of those bounces here so confused users could find out what they needed to do.
Comcast
Yahoo is turning on p=reject for 62 of their international domains on March 28, 2016. These domains include:
y7mail.com
yahoo.at
yahoo.be
yahoo.bg
yahoo.cl
yahoo.co.hu
yahoo.co.id
yahoo.co.il
yahoo.co.kr
yahoo.co.th
yahoo.co.za
yahoo.com.co
yahoo.com.hr
yahoo.com.my
yahoo.com.pe
yahoo.com.ph
yahoo.com.sg
yahoo.com.tr
yahoo.com.tw
yahoo.com.ua
yahoo.com.ve
yahoo.com.vn
yahoo.cz
yahoo.dk
yahoo.ee
yahoo.fi
yahoo.hr
yahoo.hu
yahoo.ie
yahoo.lt
yahoo.lv
yahoo.nl
yahoo.no
yahoo.pl
yahoo.pt
yahoo.rs
yahoo.se
yahoo.si
yahoo.sk
yahoogroups.co.kr
yahoogroups.com.cn
yahoogroups.com.sg
yahoogroups.com.tw
yahoogrupper.dk
yahoogruppi.it
yahooxtra.co.nz
yahoo.ca
yahoo.co.in
yahoo.co.nz
yahoo.co.uk
yahoo.com.ar
yahoo.com.au
yahoo.com.br
yahoo.com.hk
yahoo.com.mx
yahoo.de
yahoo.es
yahoo.fr
yahoo.gr
yahoo.in
yahoo.it
yahoo.ro
These may cause some delivery issues with international Yahoo domains during the transition period. Anyone using these domains in mail not sent through the Yahoo interface is likely to experience increased bounces at ISPs who are respecting the p=reject request in the DMARC record.