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Help request: Problem receiving messages with attachments from Mimecast relays

https://forum.efa-project.org/viewtopic.php?t=1386

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Help request: Problem receiving messages with attachments from Mimecast relays

Posted: 20 Jan 2016 12:56
by irow
I am having a problem that seems to be limited to receiving messages with attachments from senders who relay through Mimecast. This problem is with more than one sender companies (they are completely unrelated), but both use Exchange servers through Mimecast. I am unable to find any logs in Mailwatch showing the rejection of the message. Can anyone provide any insight or tell me where to look to even begin trouble shooting?

Below is a bounce message that a sender sent to me. The sender is running Exchange 2010 through Trustwave’s SEG, which then hands off to Mimecast. The messages are making it to Mimecast, but our server seems to be refusing to accept the email from Mimecast.

Code: Select all

Subject: [Postmaster] Email Delivery Failure
Received: from us-smtp-1.mimecast.com (Not Verified[207.211.31.120]) by
 mailmarshal-1.fredlaw.com with Trustwave SEG (v7,3,6,7949)	id
 <B569d4ffa0001>; Mon, 18 Jan 2016 14:50:02 -0600
Message-ID: <12503164-1453150202483@us-mta-41.us.mimecast.lan>
Date: Mon, 18 Jan 2016 15:50:02 -0500
From: "IT Person" < [user1] @fredlaw.com>
To: "Chris User" < [user2] @fredlaw.com>
X-MC-System: =ytJq2FFl2s7VqDZ6ugw98L9NSq8EY77isLx3Q26tn59oY/GIV7dBKL336IxzuvlMWvKeHQBb+1J5IacAGxkw4alpVmBYKP0Z
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

This is a delivery failure notification message indicating that
an email you addressed to email address :
-- [recipient] at baillonthome.com

could not be delivered. The problem appears to be :
-- Recipient email address is possibly incorrect

Additional information follows :
-- relay not permitted

This condition occurred after 1 attempt(s) to deliver over
a period of 0 hour(s).

If you sent the email to multiple recipients, you will receive one
of these messages for each one which failed delivery,  otherwise
they have been sent.

Re: Help request: Problem receiving messages with attachments from Mimecast relays

Posted: 21 Jan 2016 08:44
by DaN
Hi,

did you use greylist? if yes -> did you try to optout the adress/domain?
OR did you see a domain under "Whitelisted domains"?

Re: Help request: Problem receiving messages with attachments from Mimecast relays

Posted: 21 Jan 2016 13:32
by irow
No, I do not use greylist. It seems the common thread is Mimecast, Exchange, and a message with attachments. I was able to obtain Mimecast logs from one of the senders, and they are posted below. It seems to be a broken socket. I just can't tell, and don't know how to tell, whether the issue is on my end (EFA) or Mimecast.

Code: Select all


Delivery Threads:

INFO |0118-121722 156|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Attempt From validuser<at>fredlaw.com to validuser<at>baillonthome.com using MailScanner warning: numerical links are often malicious: 38.88.189.115:25 (MX)
INFO |0118-121722 156|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Delivering using local IP address 10.12.121.171 (Normal outbound)
INFO |0118-121722 551|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 220 EFA.baillonthome.com ESMTP Postfix
INFO |0118-121722 552|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> EHLO us-smtp-delivery-171.mimecast.com
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-EFA.baillonthome.com
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-PIPELINING
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-SIZE 50000000
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-ETRN
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-STARTTLS
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-AUTH DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-AUTH=DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-ENHANCEDSTATUSCODES
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-8BITMIME
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 DSN
INFO |0118-121722 617|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> STARTTLS
INFO |0118-121722 681|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 220 2.0.0 Ready to start TLS
INFO |0118-121722 980|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> EHLO us-smtp-delivery-171.mimecast.com
INFO |0118-121723 044|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-EFA.baillonthome.com
INFO |0118-121723 044|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-PIPELINING
INFO |0118-121723 044|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-SIZE 50000000
INFO |0118-121723 044|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-ETRN
INFO |0118-121723 044|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-AUTH DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
INFO |0118-121723 045|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-AUTH=DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
INFO |0118-121723 045|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-ENHANCEDSTATUSCODES
INFO |0118-121723 045|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-8BITMIME
INFO |0118-121723 045|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 DSN
INFO |0118-121723 045|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> MAIL FROM:<validuser<at>fredlaw.com>
INFO |0118-121723 121|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 2.1.0 Ok
INFO |0118-121723 121|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> RCPT TO:<validuser<at>baillonthome.com>
INFO |0118-121723 447|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 2.1.5 Ok
INFO |0118-121723 447|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> DATA
INFO |0118-121723 512|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 354 End data with <CR><LF>.<CR><LF>
INFO |0118-121723 512|InitialDeliveryThread-4371297|delivery.StoreMessageTX|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Message delivery started
INFO |0118-121723 512|InitialDeliveryThread-4371297|delivery.StoreMessageTX|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Message delivered as mime.
INFO |0118-121723 982|InitialDeliveryThread-4371297|delivery.StoreMessageTX|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Delivery socket damaged
ERROR|0118-121723 982|InitialDeliveryThread-4371297|delivery.StoreMessageTX|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||SocketException writing block to stream: Connection reset
INFO |0118-121723 982|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Error Code|21050|Connection reset
INFO |0118-121723 984|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Attempt From validuser<at>fredlaw.com to validuser<at>baillonthome.com using MailScanner warning: numerical links are often malicious: 23.30.230.42:25 (MX)
INFO |0118-121723 984|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Delivering using local IP address 10.12.121.171 (Normal outbound)
INFO |0118-121724 071|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 220 EFA.baillonthome.com ESMTP Postfix
INFO |0118-121724 073|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> EHLO us-smtp-delivery-171.mimecast.com
INFO |0118-121724 121|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-EFA.baillonthome.com
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-PIPELINING
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-SIZE 50000000
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-ETRN
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-STARTTLS
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-AUTH DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-AUTH=DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-ENHANCEDSTATUSCODES
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-8BITMIME
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 DSN
INFO |0118-121724 122|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> STARTTLS
INFO |0118-121724 163|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 220 2.0.0 Ready to start TLS
INFO |0118-121724 373|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> EHLO us-smtp-delivery-171.mimecast.com
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-EFA.baillonthome.com
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-PIPELINING
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-SIZE 50000000
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-ETRN
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-AUTH DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-AUTH=DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-ENHANCEDSTATUSCODES
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-8BITMIME
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 DSN
INFO |0118-121724 417|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> MAIL FROM:<validuser<at>fredlaw.com>
INFO |0118-121724 461|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 2.1.0 Ok
INFO |0118-121724 461|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> RCPT TO:<validuser<at>baillonthome.com>
INFO |0118-121724 507|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 2.1.5 Ok
INFO |0118-121724 507|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> DATA
INFO |0118-121724 555|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 354 End data with <CR><LF>.<CR><LF>
INFO |0118-121724 555|InitialDeliveryThread-4371297|delivery.StoreMessageTX|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Message delivery started
INFO |0118-121724 555|InitialDeliveryThread-4371297|delivery.StoreMessageTX|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Message delivered as mime.
INFO |0118-121724 802|InitialDeliveryThread-4371297|delivery.StoreMessageTX|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Delivery socket damaged
ERROR|0118-121724 802|InitialDeliveryThread-4371297|delivery.StoreMessageTX|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||SocketException writing block to stream: Connection reset
INFO |0118-121724 802|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Error Code|21050|Connection reset
INFO |0118-121724 804|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Attempt From validuser<at>fredlaw.com to validuser<at>baillonthome.com using MailScanner warning: numerical links are often malicious: 206.42.141.5:25 (MX)
INFO |0118-121724 804|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Delivering using local IP address 10.12.121.171 (Normal outbound)
INFO |0118-121725 148|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 220 backupmx2.mail.cogentco.com ESMTP Cogent Communications Backup MX
INFO |0118-121725 149|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> EHLO us-smtp-delivery-171.mimecast.com
INFO |0118-121725 239|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-la-cust-mx.sys.cogentco.com Hello us-smtp-delivery-171.mimecast.com [63.128.21.171]
INFO |0118-121725 239|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-SIZE 52428800
INFO |0118-121725 239|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-8BITMIME
INFO |0118-121725 239|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-PIPELINING
INFO |0118-121725 239|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-STARTTLS
INFO |0118-121725 239|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 HELP
INFO |0118-121725 239|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> STARTTLS
INFO |0118-121725 345|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 220 TLS go ahead
INFO |0118-121725 692|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> EHLO us-smtp-delivery-171.mimecast.com
INFO |0118-121725 782|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-la-cust-mx.sys.cogentco.com Hello us-smtp-delivery-171.mimecast.com [63.128.21.171]
INFO |0118-121725 782|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-SIZE 52428800
INFO |0118-121725 782|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-8BITMIME
INFO |0118-121725 782|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250-PIPELINING
INFO |0118-121725 782|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 HELP
INFO |0118-121725 782|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> MAIL FROM:<validuser<at>fredlaw.com>
INFO |0118-121725 871|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 250 OK
INFO |0118-121725 871|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> RCPT TO:<validuser<at>baillonthome.com>
INFO |0118-121725 962|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 550 relay not permitted
INFO |0118-121725 962|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||Rejection Code|23040|550|relay not permitted
INFO |0118-121725 962|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||> QUIT
INFO |0118-121726 149|InitialDeliveryThread-4371297|delivery.SmtpDelivery|mZNie1_BR1O-gn5awRMN_A|CUSA71A35|validuser<at>fredlaw.com|||< 221 la-cust-mx.sys.cogentco.com closing connection

Re: Help request: Problem receiving messages with attachments from Mimecast relays

Posted: 21 Jan 2016 14:42
by DaN
Searching for "Delivery socket damaged"
leads to http://www.devsuperpage.com/search/Arti ... ID=5815210 (no answere)
Also mimecast[dot]com
At the end of your log: "Rejection Code|23040|550|relay not permitted"
Does your exchange logs something about this?

Re: Help request: Problem receiving messages with attachments from Mimecast relays

Posted: 21 Jan 2016 14:58
by irow
Thanks Dan. I hadn't found that post yet. I'm glad to see that I'm not alone with this issue. The funny thing is that I'm not using an Exchange server behind EFA; it's a Kerio Connect server on CentOS 7. The Kerio logs do not show that the message has ever hit the mail server.

I'm also confused by the "relay not permitted" message. That's from Cogent communications, our ISP who also provides backup MX servers for spooling messages if the connection is down. I've checked with them and they don't have a log of the communications from Mimecast ever hitting their servers either. It looks like Mimecast tries our primary connection (Cogent IP) then the secondary MX record (Comcast business IP), then the two Cogent backup MX servers. None of them like the communication.

Re: Help request: Problem receiving messages with attachments from Mimecast relays

Posted: 23 Jan 2016 13:11
by shawniverson
The sender has a malformed email from and to address in the envelope...
From: "IT Person" < [user1] @fredlaw.com>
To: "Chris User" < [user2] @fredlaw.com>
Postfix doesn't like this. :naughty:
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