PowerMTA™ 4.5r1 
mta.streamad.in 

Help
Queue Detail
namehotmail.com/pmta51-167
recipients102
kbytes3,009.4
active connections0
pausedno
modebackoff
backoff reason2025-09-12 01:56:38 "550 5.7.1 Unfortunately, messages from [51.68.59.167] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol Filter Agent][AGT=PFA][MxId=11BBDFC51C817D2A] [AMS1EPF00000044.eurprd04.prod.outlook.com 2025-09-11T20:26:38.310Z 08DDEFE29119EA0D]" received from hotmail-com.olc.protection.outlook.com (52.101.73.7) matching /mail.live.com/mail/troubleshooting.aspx/
next retry2025-09-12 02:41:06
Last Errors
timeerror
2025-09-12 02:40:06 message rate limit reached (based on queue's backoff-max-msg-rate in configuration)
2025-09-12 02:40:06 Error: "550 5.7.1 Unfortunately, messages from [51.68.59.167] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol Filter Agent][AGT=PFA][MxId=11BBE0DDBA2575D7] [SN1PEPF00036F40.namprd05.prod.outlook.com 2025-09-11T21:10:06.852Z 08DDF06EDEA500F1]" while connected from neptune.streamad.in (51.68.59.167) to hotmail-com.olc.protection.outlook.com (52.101.11.14)
2025-09-12 02:40:06 message rate limit reached (based on queue's backoff-max-msg-rate in configuration) (9x)
2025-09-12 02:39:05 message rate limit reached (based on queue's backoff-max-msg-rate in configuration) (4x)
2025-09-12 02:39:05 Error: "550 5.7.1 Unfortunately, messages from [51.68.59.167] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol Filter Agent][AGT=PFA][MxId=11BBE028BE74EE6A] [AMS0EPF000001AB.eurprd05.prod.outlook.com 2025-09-11T21:09:05.528Z 08DDF01461E8DD2D]" while connected from neptune.streamad.in (51.68.59.167) to hotmail-com.olc.protection.outlook.com (52.101.73.31)
2025-09-12 02:39:05 message rate limit reached (based on queue's backoff-max-msg-rate in configuration) (6x)
2025-09-12 02:38:05 message rate limit reached (based on queue's backoff-max-msg-rate in configuration)
2025-09-12 02:38:05 Error: "550 5.7.1 Unfortunately, messages from [51.68.59.167] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol Filter Agent][AGT=PFA][MxId=11BBE183C06790E0] [BL02EPF0001A103.namprd05.prod.outlook.com 2025-09-11T21:08:05.057Z 08DDF0C1E11CD35B]" while connected from neptune.streamad.in (51.68.59.167) to hotmail-com.olc.protection.outlook.com (52.101.9.13)
2025-09-12 02:38:05 message rate limit reached (based on queue's backoff-max-msg-rate in configuration) (9x)
2025-09-12 02:37:04 message rate limit reached (based on queue's backoff-max-msg-rate in configuration) (3x)
Recipient Events       (Deliveries: 0, Bounces: 50, Deferrals: 0)
Settings