Re: [swinog] Yahoo Mail Delivery Issues

2019-09-16 Diskussionsfäden Dominic Schlegel
Hi Ralph Doing some kind of load balancing based on DNS and the geographical location is perfectly fine. I would probably also setup an anycast DNS system if our environment would be as big as Yahoo’s. But I would definitely be making sure that all records my servers respond with are

Re: [swinog] Yahoo Mail Delivery Issues

2019-09-16 Diskussionsfäden Thomas Lademann
Hi Dominic, a good way to get in touch with these "big-ones" is usually the mailop mailing list. there was a discussion some days ago because of their huge dns failure. https://www.mail-archive.com/mailop@mailop.org/msg08651.html regards Thomas Lademann Am 16.09.19 um 15:51 schrieb

Re: [swinog] Yahoo Mail Delivery Issues

2019-09-16 Diskussionsfäden Ralph Krämer
Hi Dominic, what's wrong with that? global operating companies do that for a good reason. they use geoIP on your client address to figure out the nearest server for you and put it into the reply to your request. you will be able to connect with much less latency than connecting to another

[swinog] Yahoo Mail Delivery Issues

2019-09-16 Diskussionsfäden Dominic Schlegel
Hi All We are experiencing problems delivering mails for domains having their MX record set to mx-eu.mail.am0.yahoodns.net (for example yahoo.it, yahoo.de, yahoo.co.uk). So far we have figured out that Yahoo’s DNS servers send different responses. Depending on the DNS response we are able to