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smilne
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Greylisting

One of my main contacts that I have been regularly communicating with for many years appears to have been greylisted recently and now any emails that he sends to me are bounced back undelivered. Can I resolve this? 

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MissPasko
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Re: Greylisting

First check your spam settings in VM webmail.  If set to reject spam, then change it to move messages to spam folder.  See if the emails arrive into the spam folder, then mark them as not spam to train the filter.

If that is not the problem, ask the sender to give you a copy of the bounceback message which will have clues to point us in the right direction.  You can post it here but block out the first part of any email address.

Here are two threads recently that might give you some ideas of what to look for:

https://community.virginmedia.com/t5/Email/Email-to-me-from-one-sender-not-being-delivered/td-p/4276...

https://community.virginmedia.com/t5/Email/Peculiar-Email-Problem/m-p/4278967

Let us know more and we will try to help.


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smilne
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Re: Greylisting

Thanks, yes I checked my spam settings and it is OK. Also checked my blacklist just in case I had done something daft but the sender is not on that.

The sender gave me the bounceback messages below. My understanding is that it first went wrong on 19th May but the emails got through on the fourth attempt. Now he is getting an immediate not delivered message.

2020-05-19 19:41:25 1jb6ny-0006rP-8q == xxxxxxx@ntlworld.com R=dnslookup T=remote_smtp defer (-18) H=mx.tb.ukmail.iss.as9143.net

[212.54.56.11]: Remote host closed connection in response to HELO sv-server01.xxxxxxx.co.uk

 

2020-05-19 20:11:25 1jb6ny-0006rP-8q == xxxxxxx@ntlworld.com R=dnslookup T=remote_smtp defer (-46) H=mx.tb.ukmail.iss.as9143.net

[212.54.56.11]: SMTP error from remote mail server after end of data:

421 4.2.0 MXIN610 Greylisted. Please retry later.

https://www.virginmedia.com/help/virgin-media-mail-how-to-send-bulk-emails

;id=b7e3jPm7zj4xVb7e3jNPjx;sid=b7e3jPm7zj4xV;mta=mx12.tb;dt=2020-05-19T21:11:24+02:00;ipsrc=212.159.25.129;

 

2020-05-19 20:11:31 1jb7IQ-0006vT-2Q == xxxxxxxxxxx@ntlworld.com R=dnslookup T=remote_smtp defer (-46) H=mx.tb.ukmail.iss.as9143.net

[212.54.56.11]: SMTP error from remote mail server after end of data:

421 4.2.0 MXIN612 Domain Greylisting wait period active. Please retry later.

https://www.virginmedia.com/help/virgin-media-mail-how-to-send-bulk-emails

;id=b7e9jPmBaj4xVb7e9jNPmT;sid=b7e9jPmBaj4xV;mta=mx12.tb;dt=2020-05-19T21:11:30+02:00;ipsrc=212.159.25.129;

 

2020-05-19 20:41:19 1jb6ny-0006rP-8q H=mx.tb.ukmail.iss.as9143.net

[212.54.56.11]: Remote host closed connection in response to HELO sv-server01.xxxxxxxxx.co.uk

 

 

> This message was created automatically by mail delivery software.

>

> A message that you sent could not be delivered to one or more of its

> recipients. This is a permanent error. The following address(es) failed:

>

>   xxxxxxxxxx@ntlworld.com

>     host mx.tb.ukmail.iss.as9143.net [212.54.56.11]

>     retry timeout exceeded

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MissPasko
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Message 4 of 9
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Re: Greylisting

Has the sender followed the advice in the link for sending emails to VM recipients?  VM uses certain policies to reduce spam, so senders have to comply with that.  If your sender needs help, they can come here and ask for assistance, but will possibly/eventually need to work with their email provider/host to fix it if they don't know how to update their settings.


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ravenstar68
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Message 5 of 9
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Re: Greylisting

Do you know the domain that the sender is using in their From: address?

Tim

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smilne
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Re: Greylisting

I've forwarded the links so we'll see if he can find anything in there to help. But why would this just have started happening recently - have Virgin Media changed something in an attempt to catch more spam?

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smilne
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Message 7 of 9
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Re: Greylisting

Yes it is a business name unique to them but I just blanked it out for this forum (in case I should).
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ravenstar68
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Message 8 of 9
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Re: Greylisting

Based on the limited info I have available the outbound mail server is not set up according to best practice.

The server announces itself with it's hostname - sv-server01.xxxxxxxxx.co.uk but if we look at the server's IP address as given in the error message:

212.159.25.129 - the PTR record doesn't resolve to the hostname

$ dig -x 212.159.25.129 +short
scotiavisuals.plus.com.

They need to get their reverse DNS corrected here at the very least.

Tim

 

 

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smilne
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Message 9 of 9
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Re: Greylisting

Thanks Tim, I'll pass that info on. All over my head! - but I'm sure they will get to the bottom of it.

Stan