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dansullivan
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Re: Unable to send email to virgin subscribers

Sorry to jump on, but my organisation also has the same issue. Emails sent on our behalf from a third party cannot send emails to Virgin/NTL/Blueyonder email addresses. Can anybody have a look at the error below and let me know what the potential causes are:

dansullivan_1-1612452171605.png

Whilst the image is moderated the content is:

Connecting to mx.tb.ukmail.issas9143.net [212.54.56.11] on port 25
Warning: Expected "250" Server does not support EHLO
Error: Expected "250". Server appears to be refusing the connection
Failed to submit mail to mx.tb.ukmail.issas9143.net

 

 

 

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ravenstar68
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Re: Unable to send email to virgin subscribers

@dansullivan 

I've had your post moved to it's own thread.

On first inspection, it looks as if the connection is being closed before your MTA sends it's EHLO greeting.  Have you tried a tracert to the exchanger from the affected IP.

Alternatively, you could try logging on to your MTA and run the command telnet mx.tb.ukmail.iss.as9143.net 25 to see if you get any connection at all..

Here's what you should see.  Note that I sent the quit command to close the connection cleanly.

ravenstar68@box:~$ telnet mx.tb.ukmail.iss.as9143.net 25
Trying 212.54.56.11...
Connected to mx.tb.ukmail.iss.as9143.net.
Escape character is '^]'.
220 mx11.tb.ukmail.iss.as9143.net mx11.tb.ukmail.iss.as9143.net ESMTP server ready
quit
221 2.0.0 mx11.tb.ukmail.iss.as9143.net mx11.tb.ukmail.iss.as9143.net closing connection
Connection closed by foreign host.

Tim

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dansullivan
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Re: Unable to send email to virgin subscribers

@ravenstar68 Our third party has stated that the telnet test was successful:

dansullivan_1-1613126913510.png

 

 

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ravenstar68
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Re: Unable to send email to virgin subscribers

Have they edited that image?  It shows 220 but then a line of asterisks.

Here's what I get when I try from my mailserver IP

:~$ telnet mx.tb.ukmail.iss.as9143.net 25
Trying 212.54.56.11...
Connected to mx.tb.ukmail.iss.as9143.net.
Escape character is '^]'.
220 mx8.tb.ukmail.iss.as9143.net mx8.tb.ukmail.iss.as9143.net ESMTP server ready
ehlo box.timothydutton.co.uk
250-mx8.tb.ukmail.iss.as9143.net hello [51.195.149.130], pleased to meet you
250-HELP
250-SIZE 30000000
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-STARTTLS
250 OK
quit
221 2.0.0 mx8.tb.ukmail.iss.as9143.net mx8.tb.ukmail.iss.as9143.net closing connection
Connection closed by foreign host.

Lines in blue are my commands.

Edit @ModTeam - There's no need to remove the IP for box.timothydutton.co.uk

Tim

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