Experiencing MTA Connectivity Issues Today

popowich

EQ Forum Admin
Staff member
The following is an announcement from the Yahoo Mail Postmaster Team :

---

If you're seeing some queuing in your outbounds today when sending to Y! users, we're currently experiencing low connectivity across our MTAs, which started this morning. We're working to get things back to normal. The SMTP error message being generated by the issue should be: "420 Resources unavailable temporarily. Please try later <insert Y! MTA hostname>"Our apologies for the inconvenience.

Best regards,
Carlo
Yahoo! Mail
 

popowich

EQ Forum Admin
Staff member
The problems appear to have been an issue for only a few hours :

Our MTAs' connectivity levels are stable and back to normal, folks. Thanks for hanging in there.

Best regards,

Carlo
Yahoo! Mail
 

vtx1300

New Email
Carlo,
This issue you were referring to with the "420 Resources unavailable temporarily. Please try later" still seems to be happening. Our outbound queues are struggling to communicate with your yahoo MTAs.
Curt
 

popowich

EQ Forum Admin
Staff member
Hi Curt,

The alert above is a message from the Yahoo Postmaster Team that I shared with the site.

The best way for you to directly contact the Yahoo Postmaster Team with your feed back and mail server IP address is here :

Postmaster | Yahoo! Postmaster Help

:welcome: to Email Questions! -Raymond
 

popowich

EQ Forum Admin
Staff member
Good news this Monday morning: The connectivity levels across our MTAs are looking good (through the weekend and so far today), and we expect it to stay that way. If you still have queues to Yahoo! Mail, you should see improved delivery going forward.

Best regards,

Carlo
Yahoo! Mail
 

popowich

EQ Forum Admin
Staff member
At around 6am PST, we again started experiencing low connectivity on our MXes, and we have since been working incessantly to improve the situation. As before, the SMTP error message being generated by the issue will generally be the following:

"420 Resources unavailable temporarily. Please try later <insert Y! MTA hostname"

However, some senders may see our other "421" SMTP error messages as well, as listed here:

SMTP Error Codes | Yahoo! Postmaster Help

Ensuring that email is delivered in a timely manner is of the utmost importance and priority for us, so we appreciate your patience while we work on the issue.

Best regards,

Carlo
Yahoo! Mail
 

deltady

New Email
Hi Carlo,

We have the same problem:

------ First attempt from ComenziAprovizionare@augsburg.ro to scbacus@yahoo.com ------
(00000660) New Socket
RESOLVE MX yahoo.com
...............................
IP Adr. 202.165.104.22

(1) Connecting to server 68.142.202.247 on port 25
(00000660) New Socket
(00000660) ReUseAddr : 1
(00000660) OutOfBandDataInline: 1
(00000660) KeepAlive : 5 minutes
(00000660) Socket Bound to Port 0
(00000660) Socket Connected to 68.142.202.247
(1) Connection established (660)
(00000660) read (86/0)
(00000660) Got complete TCP Message (Size=86)
(1) 420 Resources unavailable temporarily. Please try later (mta2019.mail.mud.yahoo.com)
(1) SMTP Server: Not ready!
(1) RSET
(1) SMTP Server: Reset Error!
(1) Mail Transmission aborted

What can we do?

Thanks a lot,
 

popowich

EQ Forum Admin
Staff member
Hello,

Is the IP for the mail server that you are asking about 217.156.75.100? It does not appear on any blacklists which is a good start.

How fast do you send email to Yahoo? Try sending fewer emails per IP and spreading them out across multiple IP address with matching forward and reverse DNS. You can also try to lower how many connections you are opening to the Yahoo mail servers at the same time.

If the above doesn't help contact the Yahoo Postmaster Team with this form : Postmaster | Yahoo! Postmaster Help

-Raymond
 

deltady

New Email
Yes, it is.
There are 5 simultaneous connections on and send about 8000 emails daily in scheduling 8.30-18.30!
I think our email server David-Faxware, do not know that spreading.

Thanks
 

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