[RCU] RCM appears to be the culprit for non-delivery of some emails to GMail addresses

[Jeff Ross]

On 9/3/18 9:27 AM, Vincent Van Houtte wrote:

> Hi,
>
> Something seems off, and I would not suspect RC as the first culprit:
> * PEBKAC: if the receiver has set up rules to move certain emails to a 
> folder that (s)he didn't check
> * PEBKAC: if the email is in a junkmail folder that wasn't checked
> * Qmail bug? Maybe increase log level?
> * Other bug? At my wife's office, we hit an Evolution bug last year 
> that was known for many years, but apparently nobody cared enough to 
> fix it until we were hit - the client reported that sending had 
> succeeded, but exim never actually sent the email...
>
> In general, I don't believe Gmail would reject email and not warn 
> either the sender or the recipient. Did you try the Gmail support 
> form? https://support.google.com/mail/troubleshooter/2920052?hl=en
>
This is simply not true.  Gmail absolutely drops mail after accepting it 
from my server.  Worse, it appears to be completely random so most of 
the time e-mail that Gmail accepts is delivered. My hunch is that 
different servers in their mail pool are configured slightly differently 
or their internal routing after delivery is wonky.  I have RC installed 
but only one client of mine actually uses it, so I don't think this is a 
RC problem either.

Good luck with getting any support from Gmail.  You get what you pay for 
with a gmail account.

Jeff
> If you want, I can give you my gmail.com address (off-list) so you can 
> send a few testmails to me. I have 0 mail rules set up and know how to 
> check a junkmail folder, so if that can help you solve the issue, I'd 
> be more than happy to report to you what I did and did not receive.
>
> Kr,
> Vincent
>
>
> On 2018-09-03 10:16, Philip Rhoades wrote:
>> People,
>>
>> This is my setup:
>>
>> Fedora 28 x86_64 workstation + Firefox <=> Fedora 26 x86_64 Server +
>> RCM + QMail + multiple domains <=> Internet
>>
>> I have multiple email addresses for the multiple domains I run web
>> sites and mailing lists for - last night when I mailed to someone from
>> phr AT philiprhoades DOT org to a their GMail address - the mail was
>> not delivered.  I went through a bit of debugging with the recipient
>> today and what I know so far is:
>>
>> - If I use RCM and the phr email address to send mail - even though
>> the QMail logs say that the mail was successfully delivered - it never
>> actually arrives - BUT no bounce message is ever received either.
>>
>> - If I use swaks on the server to send a test email from the phr
>> address to the same person, it is delivered OK.
>>
>> - If I use qmail-inject on the server to send the original email that
>> failed from its Maildir Sent dir to the same person, it is delivered
>> OK.
>>
>> So it looks like something that RCM is adding to the headers is being
>> objected to by the GMail servers or something - of course since
>> nothing is ever actually delivered or bounced, I can't compare the
>> header lines of the failed emails to the successful emails so I can't
>> make any more progress trying to work out what the problem is.
>>
>> I have occasionally had rDNS issues but my diagnostics don't seem to
>> fit that non-delivery issue . . anyone got any ideas?  Is it possible
>> that GMail servers can successfully accept emails but then silently
>> fail to deliver them to recipients?
>>
>> Thanks,
>>
>> Phil.
>
> Vincent Van Houtte
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