Mailgun issues - migration emails not being received

[mattdigitalme]

Hey @cadecairos We've had another few issues reported with the migration emails

One of them is the same again as yesterday: cblack@soton.ac.uk - could this be an educational filter issue? Any problems with this before?

Another is a reported issue from Twitter from a user: Ginny Franklin

Are you able to check the records at all for these accounts to see if there is anything we can report back to them?

Thanks (and apologies for the lack of technical details!)

M

[mattdigitalme]

As an update the other user got back to us - again a .ac.uk account

[cadecairos]

@mattdigitalme According to the logs, that first email address bounces on every send. It looks like it's undeliverable?

Other ac.uk emails that have failed show things like the domain being unresolveable and the email server IP address being blacklisted as a spammer.

[auralon]

So, I guess the question is, how do we resolve this, and get these recipients (who aren't spammers) to receive these emails?

Sent from my iPhone

On 9 Dec 2016, at 17:26, Christopher DeCairos notifications@github.com wrote:

@mattdigitalme According to the logs, that first email address bounces on every send. It looks like it's undeliverable?

Other ac.uk emails that have failed show things like the domain being unresolveable and the email server IP address being blacklisted as a spammer.

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[mattdigitalme]

@cadecairos @auralon Ok so at least we've identified there is an issue - is this something we need to resolve on our end, or is there something we need to tell the people who have been in touch to do on their end?

[mattdigitalme]

@cadecairos The user who is getting their emails bounced has asked if they can get any of these logs sent over so they can raise a support ticket at their end? Is this possible

[mattdigitalme]

Hey @cadecairos another one to check: luiggi.sansonetti@univ-paris3.fr Are we any closer to finding out what we might be able to do for these users? @auralon any more thoughts?

[auralon]

@mattdigitalme, not really. I think @cadecairos has the most insight on this one. If there is anything that needs addressing in the codebase, then I can take a look, but as far as I'm aware, that isn't the case.

[mattdigitalme]

@auralon Ok Sweet, over to you @cadecairos

[cadecairos]

The user who is getting their emails bounced has asked if they can get any of these logs sent over so they can raise a support ticket at their end? Is this possible

@mattdigitalme The error message for that first user is 553 5.1.8 recipient <cblack@soton.ac.uk> denied #300 (sB8F45095545700700)

[mattdigitalme]

Great thanks for this @cadecairos

[mattdigitalme]

Hey @cadecairos Are you able to give me an update (as you did with that last email address) on the state of these - so far they have tried migration a few times and received nothing:

• jelena.radlovic@skole.hr
• v.franklin@lboro.ac.uk
• luiggi.sansonetti@univ-paris3.fr
• luiggi.sansonetti@univ-rennes1.fr

Are we any closer to resolving why emails may not be getting through as not all of these are .ac.uk emails as we've previously had issues with. Be good to know if there is anything we could be telling end users to try

Thanks M

[cadecairos]

Since turning on mailgun, email bounce rates are at 0.16%.

I have a hunch the emails might be bouncing due to missing MX records on openbadges.org - I'll add them and we'll see if things improve.

[cadecairos]

jelena.radlovic@skole.hr

"Domain of sender address .... does not exist" <- hoping to fix this by adding mx records for mg.openbadges.org

v.franklin@lboro.ac.uk

"Unrouteable address Cannot verify sending domain" <- typically means the email domain is misspelled or the MX records of the receiving domain are incorrect and the mail can't be delivered.

luiggi.sansonetti@univ-paris3.fr

"Domain of sender address ... does not exist" Same as first

luiggi.sansonetti@univ-rennes1.fr

"Service unavailable; bad sender domain" Not sure what's going on here.

[auralon]

@cadecairos, 0.16% is pretty low, but hopefully with the MX changes we can reduce it even further! :+1:

[mattdigitalme]

@cadecairos This is great news on the percentage - with these MX record changes, I presume the users should attempt the migration process again, and hopefully will be successful?

[mattdigitalme]

Update - jelena.radlovic@skole.hr Successful migration - MX Record changes did the job! @cadecairos

[cadecairos]

[mattdigitalme]

At @cadecairos Heard back from all parties mentioned in this thread - all successful! Moving to close this issue :) @auralon

[auralon]

Awesome! Nice work @cadecairos :)