Some of my trac emails are still going missing. In the last case at least, this is because the message failed temporarily, and SendGrid never retried it (they're required to do by the RFCs). This is the original attempt,
Jan 2 20:04:10 mx1 postfix/postscreen[5269]: NOQUEUE: reject: RCPT from [167.89.100.166]:32175: 450 4.3.2 Service currently unavailable; from=<bounces+3351942-d13f-michael=orlitzky....@mail.sagemath.org>, to=<mich...@orlitzky.com>, proto=ESMTP, helo=<o2.hv1e.shared.sendgrid.net> and there are none afterwards. Can someone with access to the SendGrid account please open a support ticket? I've tried postmaster@ and abuse@ with no success, and their "Contact Us" page doesn't do that. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.