I run this kind of testing every day, to check if emails from xyamail.com were delivered to those big providers. I have 50+ email providers covered in the test. Here are part of the devivery results.

 May  6 17:14:57 fb postfix/qmgr[54891]: 91C2346A3E: from=<[email protected]>, size=1491, nrcpt=10 (queue active)
May 6 17:14:57 fb postfix/smtpd[65833]: disconnect from mx.199903.xyz[] ehlo=2 starttls=1 mail=1 rcpt=10 data=1 quit=1 commands=16
May 6 17:14:58 fb postfix/smtp[65841]: 91C2346A3E: to=<***@hotmail.com>, relay=hotmail-com.olc.protection.outlook.com[]:25, delay=1.2, delays=0.09/0.07/0.45/0.63, dsn=2.6.0, status=sent (250 2.6.0 <[email protected]> [InternalId=8306466753254, Hostname=CYYPR12MB8871.namprd12.prod.outlook.com] 10493 bytes in 0.257, 39.855 KB/sec Queued mail for delivery -> 250 2.1.5)
May 6 17:14:59 fb postfix/smtp[65843]: 91C2346A3E: to=<***@orange.fr>, relay=smtp-in.orange.fr[]:25, delay=2, delays=0.09/0.11/1.5/0.33, dsn=2.0.0, status=sent (250 2.0.0 vE0IpPTIJCAvcvE0JpOUkN mail accepted for delivery)
May 6 17:14:59 fb postfix/smtp[65845]: 91C2346A3E: to=<***@virgilio.it>, relay=smtp-in.virgilio.it[]:25, delay=2.1, delays=0.09/0.14/1.2/0.62, dsn=2.0.0, status=sent (250 vE0Hp2F6sHvoVvE0JpS0sS mail accepted for delivery)
May 6 17:14:59 fb postfix/smtp[65844]: 91C2346A3E: to=<***@t-online.de>, relay=mx02.t-online.de[]:25, delay=2.1, delays=0.09/0.12/1.4/0.49, dsn=2.0.0, status=sent (250 2.0.0 Message accepted.)
May 6 17:14:59 fb postfix/smtp[65838]: 91C2346A3E: to=<***@e.mail.de>, relay=mx01.mail.de[]:25, delay=2.2, delays=0.09/0.03/1.3/0.77, dsn=2.0.0, status=sent (250 OK id=153031::1683364499-597FD206-59BC1B11/0/0)
May 6 17:14:59 fb postfix/smtp[65839]: 91C2346A3E: to=<***@fantasymail.de>, relay=mx01.emig.gmx.net[]:25, delay=2.2, delays=0.09/0.04/1.6/0.54, dsn=2.0.0, status=sent (250 Requested mail action okay, completed: id=1MNtGi-1pbTA31NbE-00ODQ0)
May 6 17:15:00 fb postfix/smtp[65842]: 91C2346A3E: to=<***@internet.ru>, relay=mxs.mail.ru[]:25, delay=2.7, delays=0.09/0.09/1.6/0.93, dsn=2.0.0, status=sent (250 OK id=1pvE0J-00H7bm-Ri)
May 6 17:15:00 fb postfix/smtp[65840]: 91C2346A3E: to=<***@fn.de>, relay=emig.freenet.de[]:25, delay=3, delays=0.09/0.06/2.3/0.63, dsn=2.0.0, status=sent (250 OK id=1pvE0K-009QnZ-Cf)
May 6 17:15:00 fb postfix/smtp[65837]: 91C2346A3E: to=<***@att.net>, relay=ff-ip4-mx-vip2.prodigy.net[]:25, delay=3.4, delays=0.09/0.02/2.2/1.1, dsn=2.0.0, status=sent (250 2.0.0 3469EwRe070265 Message accepted for delivery)
May 6 17:15:05 fb postfix/smtp[65846]: 91C2346A3E: to=<***@vodafone.de>, relay=mx1.vodafonemail.de[]:25, delay=7.8, delays=0.09/0.16/7.1/0.43, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 4QD22K03jBz6vB9)
May 6 17:15:05 fb postfix/qmgr[54891]: 91C2346A3E: removed

As you see the delivery result is good, sending to the following providers gets success.

  • Hotmail
  • Orange
  • Virgilio
  • T-online
  • Mail.de
  • GMX
  • Mail.ru
  • Freenet
  • ATT
  • Vodafone

It's not easy a job to maintain clean IP cluster for sending email successfully.