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Date: Thu, 22 Feb 2024 14:54:48 +0000
Message-ID: <CAO__Xv7ioEjUxve2Mr9N+BhkXdoHS05ewpmR9J7fvj4sbiV7iQ@mail.gmail.com>
Subject: Re: [PHP-DEV] What's up with emails?
To: Derick Rethans <derick@php.net>
Cc: internals@lists.php.net
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From: fenniclog@gmail.com (tag Knife)

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On Thu, 22 Feb 2024 at 14:12, Derick Rethans <derick@php.net> wrote:

> On 22 February 2024 08:52:49 GMT-05:00, Robert Landers <
> landers.robert@gmail.com> wrote:
> >I have noticed quite a number of emails appearing on externals but not
> >appearing in my inbox. I randomly get an email saying:
> >
> >Hi, this is the Mlmmj program managing the <internals@lists.php.net>
> >mailing list.
> >
> >Some messages to you could not be delivered. If you're seeing this
> >message it means things are back to normal, and it's merely for your
> >information.
> >
> >Here is the list of the bounced messages:
> >- 122446
> >- 122448
> >
> >But I can clearly see far more than that in externals that are never
> received.
> >
> >IIRC from the email spec and internet customs, soft-bounces should be
> >retried for a number of days (though I have no idea why gmail
> >soft-bounced the messages, maybe rate-limiting?).
> >
> >If I'm using gmail and not getting emails, how many other people are
> >also not getting emails on this list?
>
>
> Lots.
>
> Gmail is rejecting emails after we moved the servers without telling us
> why, in enough detail to do anything about it.
>
> We can put a delay in delivering to Gmail, but that means mails get
> delayed for days.
>
> So my advice would for now to not rely on Gmail while we figure out how to
> improve this.
>
> cheers
> Derick
>

This could be related to the new servers new ip not being trusted. Did you
do any sort of IP Warming
<https://docs.sendgrid.com/ui/sending-email/warming-up-an-ip-address> for
the new server?
As without this, Google sees a new IP sending thousands of emails out of
nowhere and it triggers spam filters. We have
to do this at work when we onboard a new client, since we give all clients
apps there own IP, we have to run a 14 day warming
system before we can let the client go live, since without it, their emails
will most likely be blocked for spam from various inbox
providers.

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<div dir=3D"ltr"><div dir=3D"ltr"></div><br><div class=3D"gmail_quote"><div=
 dir=3D"ltr" class=3D"gmail_attr">On Thu, 22 Feb 2024 at 14:12, Derick Reth=
ans &lt;<a href=3D"mailto:derick@php.net">derick@php.net</a>&gt; wrote:<br>=
</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;b=
order-left:1px solid rgb(204,204,204);padding-left:1ex">On 22 February 2024=
 08:52:49 GMT-05:00, Robert Landers &lt;<a href=3D"mailto:landers.robert@gm=
ail.com" target=3D"_blank">landers.robert@gmail.com</a>&gt; wrote:<br>
&gt;I have noticed quite a number of emails appearing on externals but not<=
br>
&gt;appearing in my inbox. I randomly get an email saying:<br>
&gt;<br>
&gt;Hi, this is the Mlmmj program managing the &lt;<a href=3D"mailto:intern=
als@lists.php.net" target=3D"_blank">internals@lists.php.net</a>&gt;<br>
&gt;mailing list.<br>
&gt;<br>
&gt;Some messages to you could not be delivered. If you&#39;re seeing this<=
br>
&gt;message it means things are back to normal, and it&#39;s merely for you=
r<br>
&gt;information.<br>
&gt;<br>
&gt;Here is the list of the bounced messages:<br>
&gt;- 122446<br>
&gt;- 122448<br>
&gt;<br>
&gt;But I can clearly see far more than that in externals that are never re=
ceived.<br>
&gt;<br>
&gt;IIRC from the email spec and internet customs, soft-bounces should be<b=
r>
&gt;retried for a number of days (though I have no idea why gmail<br>
&gt;soft-bounced the messages, maybe rate-limiting?).<br>
&gt;<br>
&gt;If I&#39;m using gmail and not getting emails, how many other people ar=
e<br>
&gt;also not getting emails on this list?<br>
<br>
<br>
Lots.<br>
<br>
Gmail is rejecting emails after we moved the servers without telling us why=
, in enough detail to do anything about it.<br>
<br>
We can put a delay in delivering to Gmail, but that means mails get delayed=
 for days.<br>
<br>
So my advice would for now to not rely on Gmail while we figure out how to =
improve this.<br>
<br>
cheers<br>
Derick <br></blockquote><div><br></div><div>This could be related to the ne=
w servers new ip not being trusted. Did you do any sort of=C2=A0<a href=3D"=
https://docs.sendgrid.com/ui/sending-email/warming-up-an-ip-address">IP War=
ming</a> for the new server?</div><div>As without this, Google sees a new I=
P sending thousands of emails out of nowhere and it triggers spam filters. =
We have<br></div><div>to do this at work when we onboard a new client, sinc=
e we give all clients apps there own IP, we have to run a 14 day warming</d=
iv><div>system before we can let the client go live, since without it, thei=
r emails will most likely be blocked for spam from various inbox <br></div>=
<div>providers.<br></div></div></div>

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