Receiving messages in copy

[gilton.lima]

A customer recently registered on proxmox started to report strange behavior.
When receiving some e-mails from some customers with more than one e-mail in copy, only some users receive it.

I’m forwarding the header of an email sent to multiple users


From: <paulo@XXXXXXX.com.br>
To: =?utf-8?Q?Vin=C3=ADcius_Teles?= <vteles@XXXXXXXXXX.com.br>,
"mesasp01" <mesasp01@XXXXXXXXXXX.com.br>
Cc: <paulo@XXXXXXXXX.com.br>, "Gustavo.Arengue" <gustavo@XXXXXX.com.br>,
<percival@cliente.com>,
=?utf-8?Q?'Junior_|_cliente_Cosm=C3=A9ticos'?= <junior@cliente.com>
References: <00aa01d720a4$31fcdea0$95f69be0$@xxxxxxxxxxx.com.br>
In-Reply-To: <00aa01d720a4$31fcdea0$95f69be0$@xxxxxxxxxxx.com.br>
Subject: =?utf-8?Q?RES:_Ordem_recebida?=
=?utf-8?Q?_402508_-_VTR2EA04-0321__X_=C3=81FRIC?=
=?utf-8?Q?A_DO_SUL_1192_/_PARCELA_=C3=9ANICA_10?=
=?utf-8?Q?0%_USD_8.786=2C10?=
Date: Wed, 24 Mar 2021 09:52:52 -0300
Message-ID: <014a01d720ac$9c21bf00$d4653d00$@xxxxxxxxxxxxx.com.br>
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_NextPart_000_014B_01D72093.76D60DA0"
X-Mailer: Microsoft Outlook 16.0
Thread-Index: AQE6x7xza3z8rHHvB6fRMXU1BxwukqvLyQQg
Content-Language: pt-br
X-Smtpcorp-Track: 1_e31smPZv6D94.WBaLbUAsRQUoN
Feedback-ID: 469284m:469284ahB8_oh:469284soT80j08HU
X-Report-Abuse: Please forward a copy of this message, including all headers,
to <abuse-report@xxxxxxxxxx.com>
X-SPAM-LEVEL-SCL: 1

Replaces my customer's domain with "cliente.com" to preserve his identification.
Only the "Junior@cliente.com" account received the email on my service.

Has anyone been through this and could help me?

 

[Stoiko Ivanov]

The logs of the mail delivery would be needed to provide some more insight

 

[gilton.lima]

Mar 24 09:54:40 mx003deb10 postfix/smtpd[74180]: connect from a2i223.smtp2go.com[103.47.204.223]
Mar 24 09:54:40 mx003deb10 postfix/smtpd[74180]: Anonymous TLS connection established from a2i223.smtp2go.com[103.47.204.223]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Mar 24 09:54:41 mx003deb10 postfix/smtpd[74180]: NOQUEUE: client=a2i223.smtp2go.com[103.47.204.223]
Mar 24 09:54:42 mx003deb10 pmg-smtp-filter[73813]: 143FCF605B3692463EE: new mail message-id=<014a01d720ac$9c21bf00$d4653d00$@XXXXXXXXX.com.br>#012
Mar 24 09:54:45 mx003deb10 pmg-smtp-filter[73813]: 143FCF605B3692463EE: SA score=1/5 time=2.346 bayes=0.00 autolearn=no autolearn_force=no hits=AWL(-0.495),BAYES_00(-1.9),DKIM_INVALID(0.1),DKIM_SIGNED(0.1),HEADER_FROM_DIFFERENT_DOMAINS(2),HTML_FONT_LOW_CONTRAST(0.001),HTML_MESSAGE(0.001),KAM_BADIPHTTP(2),KAM_DMARC_STATUS(0.01),KAM_NUMSUBJECT(0.5),LOTS_OF_MONEY(0.001),NORMAL_HTTP_TO_IP(0.001),NUMERIC_HTTP_ADDR(1.242),RCVD_IN_DNSWL_MED(-2.3),SPF_HELO_PASS(-0.001),SPF_PASS(-0.001),WEIRD_PORT(0.001)
Mar 24 09:54:45 mx003deb10 postfix/smtpd[73545]: connect from localhost.localdomain[127.0.0.1]
Mar 24 09:54:45 mx003deb10 postfix/smtpd[73545]: 6D6EC123365: client=localhost.localdomain[127.0.0.1], orig_client=a2i223.smtp2go.com[103.47.204.223]
Mar 24 09:54:45 mx003deb10 postfix/cleanup[73546]: 6D6EC123365: message-id=<014a01d720ac$9c21bf00$d4653d00$@XXXXX.com.br>
Mar 24 09:54:45 mx003deb10 postfix/qmgr[9388]: 6D6EC123365: from=<bT.zb81786q30=ue2wvyx16yyr=le5x6covkt@return.smtpcorp.com>, size=278124, nrcpt=1 (queue active)
Mar 24 09:54:45 mx003deb10 postfix/smtpd[73545]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 xforward=1 mail=1 rcpt=1 data=1 commands=5
Mar 24 09:54:45 mx003deb10 pmg-smtp-filter[73813]: 143FCF605B3692463EE: accept mail to <junior@cliente.com> (6D6EC123365) (rule: Portal_RuleSpam_SCL (Level 0 to 7))
Mar 24 09:54:45 mx003deb10 pmg-smtp-filter[73813]: 143FCF605B3692463EE: processing time: 3.214 seconds (2.346, 0.579, 0)
Mar 24 09:54:45 mx003deb10 postfix/smtpd[74180]: proxy-accept: END-OF-MESSAGE: 250 2.5.0 OK (143FCF605B3692463EE); from=<bT.zb81786q30=ue2wvyx16yyr=le5x6covkt@return.smtpcorp.com> to=<junior@cliente.com> proto=ESMTP helo=<a2i223.smtp2go.com>
Mar 24 09:54:45 mx003deb10 postfix/smtpd[74180]: disconnect from a2i223.smtp2go.com[103.47.204.223] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
Mar 24 09:54:46 mx003deb10 postfix/smtp[74168]: 6D6EC123365: to=<junior@cliente.com>, relay=MAIL.emailzimbraonline.com[192.168.0.210]:25, delay=1.4, delays=0.07/0/0.06/1.3, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as A787E26266C)
Mar 24 09:54:46 mx003deb10 postfix/qmgr[9388]: 6D6EC123365: removed

 

[gilton.lima]

Good evening! Okay?
What is strange, is that no header that the favorite recipient appears in all users, as sent above.

Thank you very much

 

[Stoiko Ivanov]

I think I don't quite understand the problem:
* the logs show that the mail was addressed only to `junior@cliente.com`
* this mail got processed and forwarded successfully to MAIL.emailzimbraonline.com[192.168.0.210]:25

this is what I would expect in this situation - so please explain where the problem is in a bit more detail

Thanks!

 

[gilton.lima]

Good Morning! it's OK? This is very strange, the header shows that it was sent to more than 1 user. However, the log shows only one. I suspect that the client's server sends each tag separately and for some reason these were not delivered.

Thanks