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Time Required For Email to Clear Sonic?

Posted: Thu Jun 28, 2018 3:30 pm
by baumjwb
I was surprised that it took ~7 hours for a message from me to a Yahoo Group to get back to me as a member.

Help me interpret where the delay occurred.

I sent the message on Wed Jun 27 16:50:24 2018

I find this in the Source Code (Full Headers) for the message back to me:

From - Wed Jun 27 19:10:35 2018
Return-Path: <sentto-22280683-1544-1530143442-@returns.groups.yahoo.com>
Received: from n.mx.sonic.net (a.spam-proxy.sonic.net [69.12.221.245])
by b.spam.sonic.net (8.14.4/8.14.4) with ESMTP id w5RNp33c011056
(version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT)
for <xxxx@lds.sonic.net>; Wed, 27 Jun 2018 16:51:03 -0700
Received: from sonic321-30.consmr.mail.gq1.yahoo.com (sonic321-30.consmr.mail.gq1.yahoo.com [98.137.66.93])
by n.mx.sonic.net (8.14.9/8.14.9) with ESMTP id w5RNopDP025601
for <xxx@sonic.net>; Wed, 27 Jun 2018 16:50:52 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoogroups.com; s=echoe; t=1530143449; bh=s8n2unV5xzGOA5HohF362pEP7eG/AA5+8SQ4Zf9Q1+E=; h=To:References:In-Reply-To:From:List-Id:List-Unsubscribe:Date:Subject:Reply-To:From:Subject; b=mWYymaW+2/W9E0NhzEv/TGnERKySA+zt8w7AUfumzhscOa6KcLX33j24/qlCQP+ys6IRmgzugPQr70PE1mZ1b0vRdL3E0ld56EwUezQMBUmkt8+LSQou/Wy96piUlaO3Zkg9NVbqoOz5Zay+oHc6Dx2SmmGLe2+o7tRIXZgyWCw=
Received: from sonic.gate.mail.ne1.yahoo.com by sonic321.consmr.mail.gq1.yahoo.com with HTTP; Wed, 27 Jun 2018 23:50:49 +0000
X-Yahoo-Newman-Id: 22280683-m1544
X-Sender: xxxx@sonic.net
X-Apparently-To: xxxx@yahoogroups.com
X-Received: (qmail 20772 invoked by uid 102); 27 Jun 2018 23:50:39 -0000
X-Received: from unknown (HELO mtaq3.grp.bf1.yahoo.com) (10.196.204.226)
by m4.grp.bf1.yahoo.com with SMTP; 27 Jun 2018 23:50:39 -0000
X-Received: (qmail 11048 invoked from network); 27 Jun 2018 23:50:36 -0000
X-Received: from unknown (HELO mta4002.groups.mail.ne1.yahoo.com) (10.221.2.24)
by mtaq3.grp.bf1.yahoo.com with SMTP; 27 Jun 2018 23:50:36 -0000

Please, would someone more experienced make sense of the route and where the message got tied up.

thanks
baumjwb

Re: Time Required For Email to Clear Sonic?

Posted: Fri Jun 29, 2018 1:46 pm
by lr
Time zone difference?

You sent the message at 16:50 in the pacific time zone. Right now it is daylight savings time, so we are UTC-7 (7 hours behind UTC). Therefore your message was sent at 23:50 in UTC. That's all visible in the received headers: your message was received by Yahoo at "23:50:36 -0000" (that's the bottommost received line). Good. Then it took 3 seconds (until 23:50:39 -0000) bouncing around inside Yahoo. There must be some received lines missing here, because the next thing we see is the message showing up at a machine which is inside Yahoo but has "sonic" it its name at 23:50:49 +0000, ten seconds later. The next received line is already inside Sonic at 16:50:52 -0700, three seconds later. Then spam checking the message took 11 seconds (until 16:51:03 -0700).

The very first received line I can't understand: "From - Wed Jun 27 19:10:35 2018" . That's not a validly formatted mail header line. It is also a little over 2 hours later (assuming that it is in local time here on the Pacific coast).

But I don't see 7 hour delays, only 7 hour time zone difference.

Re: Time Required For Email to Clear Sonic?

Posted: Fri Jun 29, 2018 1:47 pm
by lr
... double post, sorry ...

Re: Time Required For Email to Clear Sonic?

Posted: Fri Jun 29, 2018 2:07 pm
by baumjwb
Thank you for clarifying this for me.

Re: Time Required For Email to Clear Sonic?

Posted: Sat Jun 30, 2018 12:25 am
by virtualmike
lr wrote:
The very first received line I can't understand: "From - Wed Jun 27 19:10:35 2018" . That's not a validly formatted mail header line. It is also a little over 2 hours later (assuming that it is in local time here on the Pacific coast).

My email client, Thunderbird, inserts that header into every message it downloads from the server, showing the time it was downloaded.

This, along with the other headers, implies to me that the message was delivered to baumjwb's mailbox at 16:51:03, and retrieved from his mailbox by his email client at 19:10:35, a bit less than 2:20 later.