Rob, Let me take a look and get back to you (privately).
-- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast From: mailop <[email protected]> On Behalf Of Rob Nagler via mailop Sent: Monday, May 23, 2022 5:41 PM To: [email protected] Subject: [EXTERNAL] [mailop] Comcast thottling at a dozen emails I'm struggling to get mail through to Comcast on our new-to-us IPs from Linode. We are a sending less than a dozen emails and getting throttled: May 23 14:14:46 atl3i postfix/smtp[5795]: 53C0A915D: to=<[email protected]<mailto:[email protected]>>, relay=mx1c1.comcast.net<https://urldefense.com/v3/__http:/mx1c1.comcast.net__;!!CQl3mcHX2A!ASpUf1H070Qf2oV6FY87sR8XtF5RHtZGT5LxTGACOKxdwry3aipOGLbKT5BCm90t4Ab7QaC28F94gpep2z4$>[96.102.18.148]:25, delay=460, delays=458/1.7/0.71/0.17, dsn=4.1.0, status=deferred (host mx1c1.comcast.net<https://urldefense.com/v3/__http:/mx1c1.comcast.net__;!!CQl3mcHX2A!ASpUf1H070Qf2oV6FY87sR8XtF5RHtZGT5LxTGACOKxdwry3aipOGLbKT5BCm90t4Ab7QaC28F94gpep2z4$>[96.102.18.148] said: 421 4.1.0 170.187.200.41 Throttled - try again later. Please see http://postmaster.comcast.net/smtp-error-codes.php#RL000003<https://urldefense.com/v3/__http:/postmaster.comcast.net/smtp-error-codes.php*RL000003__;Iw!!CQl3mcHX2A!ASpUf1H070Qf2oV6FY87sR8XtF5RHtZGT5LxTGACOKxdwry3aipOGLbKT5BCm90t4Ab7QaC28F94QWePxks$> (in reply to MAIL FROM command)) des.php#RL000003 (in reply to MAIL FROM command)) We send from bivio.com<https://urldefense.com/v3/__http:/bivio.com__;!!CQl3mcHX2A!ASpUf1H070Qf2oV6FY87sR8XtF5RHtZGT5LxTGACOKxdwry3aipOGLbKT5BCm90t4Ab7QaC28F94_uTAn3c$>, zoescore.com<https://urldefense.com/v3/__http:/zoescore.com__;!!CQl3mcHX2A!ASpUf1H070Qf2oV6FY87sR8XtF5RHtZGT5LxTGACOKxdwry3aipOGLbKT5BCm90t4Ab7QaC28F94wkAKrqA$>, and sensorimotor.org<https://urldefense.com/v3/__http:/sensorimotor.org__;!!CQl3mcHX2A!ASpUf1H070Qf2oV6FY87sR8XtF5RHtZGT5LxTGACOKxdwry3aipOGLbKT5BCm90t4Ab7QaC28F94hkPl7Mc$> from 170.187.200.41. We just got off the Vade Secure list, and I thought that would be sufficient. Could someone from Comcast help out? Thanks, Rob
_______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
