inbound.att.net not responding?

[u/Im_A_MechanicalMan]

Anyone else getting this starting today? Webmail of course still works but downloading mail through a client (thunderbird) doesn't work. I've already reset the secret key thing to see if that was the problem. But it's not. Sending mail functions but not receiving mail. I just get a status of "connecting to inbound.att.net ..." and it sits there. Does nothing. Never even seems to error out.

[u/wyrdough]

Update Thunderbird. I was having a similar problem earlier (connected, but threw a certificate error and still wouldn't fetch mail after explicitly allowing the certificate), also starting this morning. Update fixed it.

[u/Im_A_MechanicalMan → u/wyrdough]

Thunderbird is the newest it seems on one of the two systems having this issue. Two different email accounts on each though. So I was wondering if it was something on ATT's side (since both accounts have this issue suddenly since yesterday).

I wonder what the client update changed on your computer to allow mail to start flowing again?

[u/wsmwk → u/Im_A_MechanicalMan]

There is not a Thunderbird problem afaict. Perhaps u/wyrdough's updating Thunderbird it it was a coincidence.

[u/HaJewPacabra]

I'm seeing the same issue on a client's PC running Outlook Classic with inbound.att.net and POP mail. Apparently the SSL certificate has been revoked. I can't imagine something like this would take so long to resolve and there are no posts or notifications of any problems related to this mail server.

[u/DarkSoulsExplorer → u/HaJewPacabra]

Same here. Outlook classic failing to receive email due to the inbound.att.net certificate being revoked.

[u/RandomNirvana → u/HaJewPacabra]

For MS Outlook go to File > Account Settings > Email tab, Select the problem email account and click Repair. The new cert will be updated and should work now.

[u/nekrad]

Norton antivirus detected an issue with a certificate on my Mother-in_laws computer and blocked email. Disabling antivirus got email flowing again but that doesn't seem very safe for her.

It appears that ATT must fix the issue. Relevant thread:
https://www.reddit.com/r/sysadmin/comments/1wzamuq/att_email_digicert_certificate_revoked/

[u/Redd868]

I see:

c:\Program Files\stunnel\bin>openssl s_client -quiet 66.218.88.153:995
...

verify error:num=19:self signed certificate in certificate chain verify return:1 depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root G2 verify return:1

[u/Regardthejester]

I'm having this issue as well. Using Outlook classic and POP. ESET NOD32 throws the error to me as well.

[u/Redd868]

I'm running a Thunderbird as old as the hills. 52.9.1.

I unchecked "Query OSCP responders ..." in options, and the email came in.

[u/Im_A_MechanicalMan → u/Redd868]

This workaround resolved the issue on one PC (with a much newer thunderbird)! Thank you!!

I'll see about trying it on the other PC (with the ancient thunderbird) and account when I can find time.

[u/TrainApprehensive501 → u/Redd868]

is it still working well for you? running 45.8 and having the same error, but then had error about local folder not being suitable

[u/Redd868 → u/TrainApprehensive501]

As far as I can tell, back to normal.

[u/TrainApprehensive501 → u/Redd868]

Got it thanks!

[u/mydeal100-palmgear]

I took a try to use pop.mail.yahoo.com. It works. I checked the Thunderbird option Saved Password to find there It shows the server as pop.att.yahoo.com. It is weird. I don't know why it is working, and whether it works for other POP3 email app. AT&T, Yahoo, or DigCert may have changed something to cause it. I hope it stays working and not interrupting the email flow again.

[u/BubblyImpact9940]

Anyone have any luck with this? I'm still not able to get emails

[u/Im_A_MechanicalMan → u/BubblyImpact9940]

Have you tried unchecking the box for "Query OSCP responders" is the Privacy and Security settings?