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Discussion posts for script email-check.r

1
gchiu
26-Nov-2005 23:23
This script works as follows.


It takes the email address, and finds the domain part. It then feeds 
it to dig.r ( using 'get-mx-ip), which is able to determine the mail 
server responsible for that domain by looking up the mx records at 
your local dns server.


The smtp scheme uses system/schemes/default/host as the mail server, 
and this is then set to the value obtained above.  The script uses 
'set-net, but you can set it directly instead.


The script then sends what is known as a smtp challenge to that mail 
server.  A smtp challenge uses the null from address of "<>", 
and then sends a "RCPT TO" command to that server.  If the server 
recognises that adress, it answers appropriately.  If not, an error 
is generated by the smtp scheme, and we know that that email address 
does not exist.  If it exists, or not, we then issue a "QUIT" command 
by simply closing the smtp connection.


Note that some email servers will respond okay to every query to 
stop email harvesting.


The smtp scheme is used instead of the esmtp scheme as the latter 
is not necessary for this, and furthermore has smarts in it which 
prevent it being used in this way.
2
sumnerzzupa
24-May-2021 6:35
REBOL

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3
johnsjvi95
9-Sep-2021 10:08
REBOL

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4
alfsavage10
29-Sep-2021 1:18
Hello, I know this is kinda off-topic, but I just wanted to ask if you do know where I can find tree removal  in my area? By the way, I am from Macon
5
otis
24-Oct-2022 22:01
REBOL

Email addresses appear in alphabetical order (A–Z). among usWhen names start with the same letter, look at the second letter. Here, all the names begin with F

Contents:

MakeDoc2 by REBOL- 24-Oct-2022
6
crutcherhuyn
28-Oct-2022 1:11
REBOL

Using ">" as the null from address, a smtp challenge is sent. and then issues the server a "RCPT TO" instruction. Should the server acknowledges that address and responds properly.

Contents:

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MakeDoc2 by REBOL- 28-Oct-2022
7
johnsjvi95
19-Nov-2022 7:37
REBOL

The script then sends that mail a so-called smtp challenge server. Using ">" as the null from address, a smtp challenge is sent and then issues the server a "RCPT TO" .

Contents:

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MakeDoc2 by REBOL- 19-Nov-2022
8
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5-Dec-2022 8:04

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9
odonnellmon
22-Dec-2022 0:31
REBOL

We can identify and fix any issues that you’re having with your rig’s brakes.

Contents:

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MakeDoc2 by REBOL- 22-Dec-2022
10
madmardigan
13-Mar-2023 8:06
REBOL

After everything’s done, our technician won’t just move on – rather, they’ll inspect your car for optimal performance after ensuring all systems are functioning properly.

Contents:

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MakeDoc2 by REBOL- 13-Mar-2023
11
crutcherhuyn
13-Mar-2023 18:08
REBOL

We’ll quickly diagnose and repair any electrical issues you’re having with your truck.

Contents:

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MakeDoc2 by REBOL- 13-Mar-2023
12
madmardigan
28-Jun-2023 2:06
REBOL

Whether you need routine maintenance or urgent repairs, our certified mechanics are committed to getting the job done right the first time.

Contents:

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MakeDoc2 by REBOL- 28-Jun-2023
13
ampva301
15-Aug-2023 19:43
REBOL

Sending an smtp challenge uses the null from address ">". sends the server an "RCPT TO" command. As long as the server recognizes the IP and responds properly.

Contents:

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MakeDoc2 by REBOL- 15-Aug-2023
14
miyaka22
8-Sep-2023 10:17
REBOL

To help our customers ensure the safety of their surroundings, our team provides thorough tree removal services.

Contents:

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MakeDoc2 by REBOL- 8-Sep-2023
15
lino
17-Jan 19:52
REBOL

Your post is a great resource for anyone interested in this topic. melon playground

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MakeDoc2 by REBOL- 17-Jan-2024