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Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

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Untitled

Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

  • No Related Posts

Untitled

Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

  • No Related Posts

Untitled

Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

  • No Related Posts

Untitled

Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

  • No Related Posts

Untitled

Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

  • No Related Posts

Untitled

Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

  • No Related Posts

Untitled

Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

  • No Related Posts

Untitled

Here is an example outline of what happens:

1) Sending SMTP server connects to SMG (SMTP Interface)

SMG now has the sending server’s IP address. Soit can perform IP reputation check and RBL (if it is configured todo so)

This also means information that can be added toMessage Tracker (if it is configured to do so)

2) Sending SMTP server sends MAIL FROM command

SMG now has the sender’s email address. So itcan perform SPF check (if it is configured to do so)


We have more information that can be added toMessage Tracker

3) Sending SMTP server sends RCPT TO command(s)


SMG now connects or attempts to connect to thereceiving server and SMG begins the SMTP conversation with thereceiving server on the sendering servers behalf.

We have more information that can be added toMessage Tracker, including if SMG cannot connect to the receivingserver.

4) Sending SMTP server sends the DATA command


SMG now has the message (mime) and it can besent to the message scanner for full scanning


We have more information that can be added toMessage Tracker, including if the message was accepted by thereceiving server.

Throughout this process if the SMTP conversation is terminatedbetween the sending server and SMG or between SMG and the receivingserver (which also means if a firewall in the middle blocks theconversation), If message tracking is configure then I would expectto see some clues in the message tracking information.

It’s likely that a block due to a firewall will appear as a timeoutor lost connection.

Related:

  • No Related Posts

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When creating the policies for this outbound message SMG server, oneshould carefully specify the criteria so that the correct policy canbe identified and applied to scan any message that needs scanning.

The policy to be applied to outbound mail is different from the policy tobe applied to inbound mail. One may choose to skip spam checkson outbound mail but add a message signature and a DKIM signature.

For occasional inbound mail that is offered on this outbound message SMG,the policy may be set up to always block messages, but to scan and track forstatistical purposes.

We’ll explain with an example.

In our example we do not define a Relay Module:




Also we do not enable relaying on the SMTP interface. This done by notchecking the ‘Allow relay’ box on the SMTP Interface | Relay/Host Protection

Wehave configured an outbound policy, that is enabled to handle outbound message


Andconfigured an inbound policy that is enabled to handle occasional inbound messages

In theinbound message policy – editor, we have configured the filters as such that allinbound messages are blocked and scanned:



When we search in the message tracker for inbound messages, these will havebeen blocked by the ‘Message Received’ filter, and occasionally also by theother filters, such as the ‘Finger Executable Files’ or ‘Virus Filter Group’.


When consideringthe options in the policy criteria one will recognize how to create policiesthat match the specific requirements of your users. The SMG scanning policiescan be very flexible and powerful however careful consideration must be used tocraft the policies that meet the needs.

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