(recv) socket [552] was gracefully closed during [DATA] command by the remote client

cbesterx
Posts: 1
Joined: Wed Aug 03, 2016 3:16 pm

(recv) socket [552] was gracefully closed during [DATA] command by the remote client

Postby cbesterx » Wed Aug 03, 2016 3:27 pm

Hi All

We are experiencing an odd issue. We can send email fine via MailEnable but as soon as we send an email with a zip file attached, we receive the following error:

08/03/16 16:08:46 ME-IXXXX: [552] (Debug) Inbound connection from 192.168.0.10, family=2, port=25
08/03/16 16:08:46 ME-I0107: [552] Relay Granted: Sender IP (192.168.0.10) is within an authorized IP range.
08/03/16 16:08:46 ME-I0070: [26C4BBAF2313427EB7F0AC788603D054.MAI] (recv) socket [552] was gracefully closed during [DATA] command by the remote client 192.168.0.10.
08/03/16 16:08:46 ME-IXXXX: [552] (Debug) Removing connection
08/03/16 16:08:46 ME-I0074: [552] (Debug) End of conversation

A successful message looks like this:
08/03/16 16:07:44 ME-IXXXX: [680] (Debug) Inbound connection from 192.168.0.10, family=2, port=25
08/03/16 16:07:44 ME-I0107: [680] Relay Granted: Sender IP (192.168.0.10) is within an authorized IP range.
08/03/16 16:07:44 ME-I0149: [680] CD1B939582CF4C4F9E0FAF7008ADF2AE.MAI was received successfully and delivery thread was initiated
08/03/16 16:07:44 ME-IXXXX: [23E123F0BD3C45FE8F82E9F75FC6E78C.MAI] was loaded with the following recipients: [SMTP:test@test.co.uk]
08/03/16 16:07:44 ME-I0024: [23E123F0BD3C45FE8F82E9F75FC6E78C.MAI] SMTP Server is forwarding all mail (directly) to SMTP Hosts [10.16.172.171].
08/03/16 16:07:44 ME-I0026: [23E123F0BD3C45FE8F82E9F75FC6E78C.MAI] Sending message
08/03/16 16:07:44 ME-IXXXX: [23E123F0BD3C45FE8F82E9F75FC6E78C.MAI] DNS resolved to the following record: IP Address=10.16.172.171, Family=2, Type=1, Protocol=0
08/03/16 16:07:44 ME-IXXXX: [680] (Debug) Removing connection
08/03/16 16:07:44 ME-I0074: [680] (Debug) End of conversation
08/03/16 16:07:44 ME-E0032: [23E123F0BD3C45FE8F82E9F75FC6E78C.MAI] Checking whether footer is to be added.
08/03/16 16:07:44 ME-E0032: [23E123F0BD3C45FE8F82E9F75FC6E78C.MAI] No footer enabled.
08/03/16 16:07:45 ME-IXXXX: [23E123F0BD3C45FE8F82E9F75FC6E78C.MAI] Transmission attempt completed
08/03/16 16:07:45 ME-I0049: [23E123F0BD3C45FE8F82E9F75FC6E78C.MAI] Send Completed Successfully (0.740s).

Any ideas?

Thank you

MailEnable-Ian
Site Admin
Posts: 8318
Joined: Mon Mar 22, 2004 4:44 am
Location: Melbourne, Victoria, Australia

Re: (recv) socket [552] was gracefully closed during [DATA] command by the remote client

Postby MailEnable-Ian » Wed Aug 31, 2016 12:33 am

Hi,

Most likely the cause here is that the SMTP transaction is being filtered via an SMTP proxy and is filtering the data that is being transmitted. It may not like the data being transmitted and drops the connection during the SMTP DATA command. Do you have a proxy/spam gateway in front of the MailEnable server? Also client side AV programs running email proxies and email scanners can also trigger when trying to send a message and drop the connection therefore you may to look into this as well.
Regards,

Ian Margarone
MailEnable Support

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