PowerMTA™ 4.5r1 
mta.streamad.in 

Top 10 queues in virtual MTA "pmta51-167" by number of recipients

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Name #Rcpt KBytes #Conn Paused Mode Last Error
gmail.com/pmta51-167 605 12,570.6 0 no normal 2026-04-04 17:53:30 message rate limit reached (based on queue's max-msg-rate in configuration) (8x)
yahoo.com/pmta51-167 111 2,941.6 0 no normal 2026-04-04 15:30:13 Error: "550 5.7.9 This mail has been blocked because the sender is unauthenticated. Yahoo requires all senders to authenticate with either SPF or DKIM. Authentication results: DKIM = FAILURE - SPF bcsonline.org.in with ip 51.68.59.167 = FAILURE. See https://senders.yahooinc.com/smtp-error-codes/#authentication-failures for more information." while connected from neptune.streamad.in (51.68.59.167) to mta5.am0.yahoodns.net (98.136.96.75)
hotmail.com/pmta51-167 74 1,960.2 0 no backoff 2026-04-04 18:05:37 message rate limit reached (based on queue's backoff-max-msg-rate in configuration)
yahoo.co.in/pmta51-167 70 1,854.3 0 no normal 2026-04-04 18:03:35 Error: "550 5.7.9 This mail has been blocked because the sender is unauthenticated. Yahoo requires all senders to authenticate with either SPF or DKIM. Authentication results: DKIM = FAILURE - SPF bcsonline.org.in with ip 51.68.59.167 = FAILURE. See https://senders.yahooinc.com/smtp-error-codes/#authentication-failures for more information." while connected from neptune.streamad.in (51.68.59.167) to mx-apac.mail.gm0.yahoodns.net (106.10.248.74)
yahoo.in/pmta51-167 20 520.6 0 no normal 2026-04-04 18:00:48 Error: "550 5.7.9 This mail has been blocked because the sender is unauthenticated. Yahoo requires all senders to authenticate with either SPF or DKIM. Authentication results: DKIM = FAILURE - SPF bcsonline.org.in with ip 51.68.59.167 = FAILURE. See https://senders.yahooinc.com/smtp-error-codes/#authentication-failures for more information." while connected from neptune.streamad.in (51.68.59.167) to mx-apac.mail.gm0.yahoodns.net (106.10.248.74)
outlook.com/pmta51-167 7 185.4 0 no backoff 2026-04-04 18:05:46 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=11BD1EEA79DCF894] [OSA0EPF000000C8.apcprd02.prod.outlook.com 2026-04-04T12:35:46.629Z 08DE8F75437AAD46]" while connected from neptune.streamad.in (51.68.59.167) to outlook-com.olc.protection.outlook.com (52.101.157.0)
live.com/pmta51-167 6 158.9 0 no backoff 2026-04-04 18:05:22 message rate limit reached (based on queue's backoff-max-msg-rate in configuration)
ymail.com/pmta51-167 6 158.9 0 no normal 2026-04-04 18:03:48 Error: "550 5.7.9 This mail has been blocked because the sender is unauthenticated. Yahoo requires all senders to authenticate with either SPF or DKIM. Authentication results: DKIM = FAILURE - SPF bcsonline.org.in with ip 51.68.59.167 = FAILURE. See https://senders.yahooinc.com/smtp-error-codes/#authentication-failures for more information." while connected from neptune.streamad.in (51.68.59.167) to mta6.am0.yahoodns.net (67.195.228.106)
tmf-group.com/pmta51-167 2 53.0 0 no normal   
dpsca.in/pmta51-167 1 26.5 0 no normal   

10 of 18 matching queues.

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