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New Email Problems: emails not getting delivered

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New Email Problems: emails not getting delivered

I have 2 emails in my inbox with subjects like:

- Warning: message 1G1Cb3-0006kS-MQ delayed 24 hours

The content states this as why:

Quote
Delay reason: Malformed SMTP reply from mail.logicworks.co.uk [217.168.144.37] in response to initial connection:
rblsmtpd: 212.159.14.131 pid 30841: 451 http://dsbl.org/listing?212.159.14.131

and
Quote
Delay reason: SMTP error from remote mailer after MAIL FROM:<xxx@xxx.xxx> SIZE=2235:
host extmail.bigpond.com [144.140.90.13]: 451 Mail from this IP address blocked due to DNS block list.

Note I blanked the real email address with xxx@xxx.xxx

So there are at least 2 email servers out there that are blocking plus.net's mail servers. Going to the link shown in the first message: http://dsbl.org/listing?212.159.14.131 links to this explanation page: http://dsbl.org/sender
Quote
I got a message telling me to come here.
We're sorry. If you bothered coming to this page, you are probably an innocent mail user whose mail has bounced back with a message telling you to come to this site. We'll try to explain what's happened.

You sent mail to a destination address. The person who runs the mail server at that address has chosen to refuse email from dangerously misconfigured, insecure, or abuseable servers based on a list that we publish. They most likely did this because blocking mail that originates from servers in our list can significantly reduce the amount of UCE (unsolicited commercial email), or spam, that users of their mail server receive.

Please understand: we're not implying that you send spam. The message that you received simply means that the administrator of your server either doesn't know, or has chosen to run an open relay or open proxy.

An open relay is a mail server that will accept and deliver mail from anywhere to anywhere. This is as opposed to properly configured mail servers, which will only accept mail from or to their own site. Many spammers send spam through these relays, which act as amplifiers and anonymizers for their messages.
How to fix this.
Of course, you want your mail to go through. In order for this to happen, your Internet Provider needs to fix their mail server. You can point them to this page, if you like; there are instructions linked off our front page fixing most mail servers. As soon as your provider fixes their server and requests removal from this website, your mail will start going through again.
But my provider says that they aren't an open relay!
Looking up any IP address listed in DSBL on our website will display a copy of a message actually relayed through that server, with full headers and SMTP envelope. DSBL only adds hosts to our database that actually relay mail; accepting the mail then dropping it won't get a host listed.
But the open relay was fixed last week!
Since DSBL does not do tests of servers, it has no way to detect that your server was fixed. The administrator of the server can remove the server from DSBL at any time. However, it is advisible to fix the security problem before requesting to be removed from DSBL, since servers with a persistant security problem tend to get listed again eventually.
My provider says that they have to be an open relay.
No server has to be an open relay. For installations that have users sending mail from all around the world (such as many web hosting companies), SMTP AUTH is an excellent solution for avoiding open relay.


Oh dear!
46 REPLIES
octafish
Grafter
Posts: 124
Registered: 24-05-2007

New Email Problems: emails not getting delivered

A friend has been emailing me from Hotmail and has been getting the error that delivery to my email address is being delayed.

He's not the only one, so are there still problems with email?

S
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New Email Problems: emails not getting delivered

Have not recieved any e-mails for about a week now
unacceptable in my opinion.
octafish
Grafter
Posts: 124
Registered: 24-05-2007

New Email Problems: emails not getting delivered

I'm getting email but clearly not everything.

S
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New Email Problems: emails not getting delivered

All i'm getting is undeliverable mails i.e cheap viagra etc.

oh joy Cry
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New Email Problems: emails not getting delivered

This post is NOT about not getting emails, it's about emails FROM me not getting out because other ISP's don't trust Plus.net's email servers.
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New Email Problems: emails not getting delivered

I have posted this problem before and had no replies, comcast in the US have PN listed as a spam server too amongst many others. PN is just a poor supplier of an email service. remember 92 % of uswitch members are happy with PN, and 92% of those asked worked for PN or uswitch probably
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New Email Problems: emails not getting delivered

I must confess I've had more problems with PN than my last ISP: Vispa. And I left them cos of all the issues I was having (and cos they were getting expensive), at least at Vispa you had easy access to their best customer service.

But barred email servers cos the stmp relay port is open is a noobs mistake. Given that I have previously successful emailed to the people I'm currently having problems with, I'm assuming this is a recent change that's been overlooked with all the email work that's been going on recently.
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New Email Problems: emails not getting delivered

At least one of the PlusNet mailservers has been blacklisted by some ISPs for over a year.
If more do the same I'll no longer be able to use my Plusnet mailbox.

I left my last ISP because so many providers had blocked it's mail servers as known spamming sources that it was unusable for sending anything.. apart from spam, maybe. But I never investigated that as I hate spam.

The blacklisted mailserver was reported to CS many months ago, but it's still blacklisted. Plus did offer to give me a new IP address, but that wouldn't help unless I ran my own SMTP server, and private mailservers are bounced by many ISPs. Besides, my IP address isn't blacklisted, the plus mailserver is.
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New Email Problems: emails not getting delivered

PN please sort out the basics first. Otherwise all this stress and embassament caused recently is a complete waste if we cant send mail due to being blacklisted.
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New Email Problems: emails not getting delivered

FYI this was received in early may

SMTP error from remote mailer after MAIL FROM:<x@x.plus.com> SIZE=8054:
host gateway-r.comcast.net [204.127.198.26]: 550-212.159.14.131 blocked by ldapShockedu=rblmx,dc=comcast,dc=net
550 Blocked for abuse. Please send blacklist removal requests to blacklist_comcastnet@cable.comcast.com - Be sure to include your mail server IP ADDRESS.

and this one last week

SMTP error from remote mailer after MAIL FROM:<x@x.plus.com> SIZE=2808:
host gateway-r.comcast.net [204.127.198.26]: 550-212.159.14.133 blocked by ldapShockedu=rblmx,dc=comcast,dc=net
550 Blocked for abuse. Please send blacklist removal requests to blacklist_comcastnet@cable.comcast.com - Be sure to include your mail server IP ADDRESS.
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New Email Problems: emails not getting delivered

The mailserver I reported to CS way back, that has had mail bounced from it for over a year can be found here.
http://dsbl.org/listing?212.159.14.131.

It is listed in the multihop group and is pih-relay04.plus.net.

The same mail server is now apparently preventing us sending mail to Hotmail. If you can't even send to a free mail account, that has a reputation for spamming in the past, things are bad.
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New Email Problems: emails not getting delivered

has anyone logged a ticket as yet as it doesnt seem like pn has picked this up yet
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New Email Problems: emails not getting delivered

I did about 6 months ago, was told that they were working on it, and was offered a static IP and rDNS to match my IP address..
I already have a static IP but I don't usually run my own mail server because non-ISP mail is often rejected.
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New Email Problems: emails not getting delivered

This sucks. I've just got a new business partner, and right at the moment, email to him is the ONLY email of mine that's getting rejected!