On 2020-08-20 at 09:35 +0200, Hans-Martin Mosner via mailop wrote: > Am 20.08.20 um 09:10 schrieb Benoit Panizzon via mailop: > > > > Return-Path: <bounces+11567575-c581-****@sendgrid.net> > > > > Does the c581 part also belong to the account id? > No, it's a short hash to verify that bounces were indeed caused by > mails actually sent from sendgrid. For example, > <bounces+6019856-057d-****@sg.e.doodle.com> and <bounces > +6019856-0d96-****@sg.e.doodle.com> are doodle notifications > sent to two different mail addresses. I don't know whether the time > also takes part in the hash computation (as in SRS).
I see the same later part when the destination is the same recipient, hours and even months later, so the time isn't computed there. I thought that it might be an index of the "subscriber" into the customer list. The same account, spammed by different sendgrid accounts, has different suffixes, but that's not surprising. I don't get much sendgrid spam when compared with other people, but today it was quite prolific: 17045745 - "you have been gifted $5 MILLION USD From Mr. Bill Gates" + "CONGRATULATION TO YOU" (20 Italian billionaries donating money) 9364509 - "To prevent your email from closing, please verify your account details below" 13001617 - This is a plain-spam account. Today it was for recharge-mobile.co spam, which mixes with a shop of earrings, bracelets, etc. Best regards _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
