PowerMTA™ 4.5r1 
mta.streamad.in 

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Queue Detail
nameyahoo.in/pmta54-159
recipients18
kbytes457.5
active connections0
pausedno
modenormal
backoff reason 
next retry2026-04-04 22:03:23
Last Errors
timeerror
2026-04-04 18:03:23 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 54.36.75.159 = FAILURE. See https://senders.yahooinc.com/smtp-error-codes/#authentication-failures for more information." while connected from ceres.streamad.in (54.36.75.159) to mx-apac.mail.gm0.yahoodns.net (106.10.248.74)
2026-04-04 18:03:09 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 54.36.75.159 = FAILURE. See https://senders.yahooinc.com/smtp-error-codes/#authentication-failures for more information." while connected from ceres.streamad.in (54.36.75.159) to mx-apac.mail.gm0.yahoodns.net (106.10.248.74)
2026-04-04 18:00:54 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 54.36.75.159 = FAILURE. See https://senders.yahooinc.com/smtp-error-codes/#authentication-failures for more information." while connected from ceres.streamad.in (54.36.75.159) to mx-apac.mail.gm0.yahoodns.net (106.10.248.74)
Recipient Events       (Deliveries: 0, Bounces: 3, Deferrals: 0)
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