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Plusnet Outbound mail filtering

  • Chris
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« on 21/01/2009, 15:31 »
Same thing as we did for Madasafish yesterday is being rolled to Plusnet this afternoon.

Quote
Planned Outbound Email Server Maintenance - Wednesday 21st January 4.00pm-6.00pm

When's this work happening?
Today.

What does it affect?
Outbound Email delivery.

How long will it take?
About an hour.

What does the work involve?
We will be making changes to the routing of customers' outbound email so that it passes through our IronPort spam filtering platform. This will allow us to reduce the volume of unsolicited email sent sent by spammers trying to abuse our email platform.

Is it likely to cause problems?
No.

Is there anything else I need to know?
We are performing this work to reduce the possibility of our mail servers being placed on third party blacklists. In the past this has created problems for customers trying to send emails to other providers such as Hotmail, Yahoo and Comcast.

Emails will still be sent to our relay servers, and you don't need to make any configuration changes. However all email will pass through the IronPort spam platform before reaching the recipient.

Customers who are using SPF with third party domains may need to update their SPF records.
http://en.wikipedia.org/w...i/Sender_Policy_Framework

The IP addresses of the new IronPort boxes are:
212.159.7.99
212.159.7.100
212.159.7.35
212.159.7.36


Kind Regards,

Chris Parr
Customer Support
Chris Parr
Plusnet Support Team
Service Status :: RSS :: Email

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« Reply #1 on 21/01/2009, 23:12 »
Quote
Planned Outbound Email Server Maintenance - Wednesday 21st January 4.00pm-6.00pm

Is it likely to cause problems?
No.

Yeah right and did you seriously expected me to believe that and not try a 10 second test to confirm whether it was in fact reality or primarily fiction and/or the result of someone consuming a very large bucketful of wishful thinking  !!

Oh this is just brilliant  Roll Eyes Well done PN for providing yet another good potential kick in the nuts to genuine paying customers all in the name of allegedly addressing the problems with spammers that have previously been allowed to abuse the system in just about any way they so wish for years. Grrrrrrrrrr   Angry

Not only is it virtually impossible to get genuine but potentially dodgy messages received by PN A/Cs via ironport without them getting silently eaten on the way REGARDLESS OF THE A/C MMM SETTINGS but it is now also apparently impossible to get them delivered to anywhere in the internet world at all because any potentially dodgy messages are currently being silently eaten following receipt by relay and thus never get any further than PN Towers.  So as well as the recipient not being aware that their email might have been quietly eaten by PN, the sender has absolutely no idea that it might well have been either.  Excellent stuff.

So remind me again as I have my daily wade through all the spam PN has generously provided me with at no extra charge ... Why am I paying handsomely to a company that has virtually welcomed spammers and has apparently done nothing whatsoever to curtail their activities over the best part of at least the last 10 years but who somehow insists on instituting draconian measures various in a blind panic, without proper testing or any published specification, that ALWAYS seems to manage to generally screw up the service provided to genuine paying customers rather than just that of the serial abusers ?

« Last Edit: 21/01/2009, 23:18 by mikeb »

WARNING: The e-mail address on my profile is not my usual address, all messages sent via this site have been redirected elsewhere for test purposes. This could result in messages not being received in a timely manner or potentially not being received at all.
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« Reply #2 on 22/01/2009, 09:50 »
Hi,

Regarding the notification "Planned Outbound Email Server Maintenance - Wednesday 21st January 4.00pm-6.00pm" from yesterday (21/1/09).

Considering the current concern over IronPort, will we know if any email has not been sent (ie. will we, the sender, get a bounce-back notificiation, etc.)?

Thanks.
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  • Chris
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« Reply #3 on 22/01/2009, 09:54 »
Outbound email that is blocked by the IronPorts will be silently dropped AIUI.
Chris Parr
Plusnet Support Team
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« Reply #4 on 22/01/2009, 09:58 »
Thanks for such a quick response Chris. However, I know that ocassionally (perfectly legitimate no-spam) emails I send get flagged as spam by the recipients servers. How am I going to know now if emails aren't being delivered? It's hardly acceptable to have to ring people after every email to see if it go tthrough.
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« Reply #5 on 22/01/2009, 10:03 »
You beat me to it daveyb - I was penning the following while you were replying....

I run a software support desk. If IronPort does not notify me that it has (mistakenly) blocked one of my emails, I will think that the customer has been replied to - when in actual fact they are still waiting for me to get in touch.

Tony
« Reply #6 on 22/01/2009, 10:10 »
Can a Mod move this to the correct forum please.
I was just reading a thread in the IronPort forum and wondered what it was about.
Well mikeb, I can now see, words fail me.

@PN
WHY?
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« Reply #7 on 22/01/2009, 10:23 »
Outbound email identified as spam will be silently dropped. I'd like to make it clear thought that this is set *very* leniently. I am yet to see a legitimate email lost. @Anotherone, I will reply to mikeb's thread over in the IronPort forum, however I am also yet to see an example of a legitimate inbound email being silently dropped for a customer with Edge Protection switched off in the Manage My Mail settings.
Bob Pullen
Plusnet Support Team
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  • Oldjim
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« Reply #8 on 22/01/2009, 10:33 »
[Moderator's note by Jim (Oldjim)  topic started by daveyb from Community support merged as is the same subject ]
Jurassic Coast
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« Reply #9 on 22/01/2009, 10:55 »
Hi Bob and others,

I'm really, really against this. It's difficult enough that ocassionally the recipient's servers flag emails as spam and you then have to ask them to check their spam folder, but if things don't get through now, we won't know where the problem is - whether it's at the IronPort end or the recipient's end. We need to know that our mail relay servers are faithfully and consistently delivering all mail to their intended destination. We really can't have a solution where things can get silently dropped and no-one is any the wiser.

What is the problem with PlusNet being blacklisted anyway - surely you only get blacklisted for high volumes of spammy email, so can't you identify the username that's relaying lot's of spammy email and (i) put a temporary stop on their account (ii) terminate the account if it is genuinely being abused. I am being too simplistic?
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  • Jameseh
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« Reply #10 on 22/01/2009, 10:58 »
Quote
What is the problem with PlusNet being blacklisted anyway - surely you only get blacklisted for high volumes of spammy email, so can't you identify the username that's relaying lot's of spammy email and (i) put a temporary stop on their account (ii) terminate the account if it is genuinely being abused. I am being too simplistic?

That's exactly what happens.  But we can't stop it straight away, however we do monitor for high volumes of email traffic.
James Bailey

Plusnet New Recruits and Advisor Graduation Lead
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« Reply #11 on 22/01/2009, 12:00 »
What is the problem with PlusNet being blacklisted anyway - surely you only get blacklisted for high volumes of spammy email, so can't you identify the username that's relaying lot's of spammy email and (i) put a temporary stop on their account (ii) terminate the account if it is genuinely being abused.

Yes, when it's too late Wink

Quote
Planned Outbound Email Server Maintenance - Wednesday 21st January 4.00pm-6.00pm

Is it likely to cause problems?
No.

Yeah right and did you seriously expected me to believe that and not try a 10 second test to confirm whether it was in fact reality or primarily fiction and/or the result of someone consuming a very large bucketful of wishful thinking  !!

Mike, it's not the first time we've said that in a Service Status post and things have gone wrong. I'm not sure what you would rather we wrote? We didn't intentionally break anything!

Oh this is just brilliant  Roll Eyes Well done PN for providing yet another good potential kick in the nuts to genuine paying customers all in the name of allegedly addressing the problems with spammers that have previously been allowed to abuse the system in just about any way they so wish for years. Grrrrrrrrrr   Angry

'Alledgedly'? - What exactly do you think our alterior motive is?

Not only is it virtually impossible to get genuine but potentially dodgy messages received by PN A/Cs via ironport without them getting silently eaten on the way REGARDLESS OF THE A/C MMM SETTINGS

Have I missed a post from you somewhere Mike, I didn't think we had any examples of this where 'Edge Protection' had been switched off via Manage My Mail?

Quote
So remind me again as I have my daily wade through all the spam PN has generously provided me with at no extra charge ... Why am I paying handsomely to a company that has virtually welcomed spammers and has apparently done nothing whatsoever to curtail their activities over the best part of at least the last 10 years but who somehow insists on instituting draconian measures various in a blind panic, without proper testing or any published specification, that ALWAYS seems to manage to generally screw up the service provided to genuine paying customers rather than just that of the serial abusers ?

My understanding was that you don't use our spam filtering for your main account Mike? As you'll no doubt be aware there are alternatives, and customers are well within their rights to source a third party solution or run their own spam filters/mail server if they'd prefer. No solution is 100% perfect however I'm off the opinion that IronPort isn't too far off.
Bob Pullen
Plusnet Support Team
Service Status :: RSS :: Email

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« Reply #12 on 22/01/2009, 16:38 »
I received reports that several messages I'd sent had not been received by the recipients within a reasonable timeframe and apparently still haven't been many hours later. Subsequently, a bunch of test messages sent at stupid o'clock via the relay/ironport(out) route were found to simply disappear. Others received odd error messages various similar to those posted by me and other users although some of these were regrettably down to my fat fingers introducing a sneaky typo that I didn't spot until very much later unfortunately  Embarrassed

However, excluding those with typo issues, the same test messages sent direct to PN A/Cs via ironport(in) were accepted and delivered. The same test messages sent via postini (to PN/postini enabled A/Cs only of course) were also accepted and delivered. If that doesn't demonstrate a problem with ironport(out) then I don't know what the h*ll does. It also indicates that the performance of ironport(out) is perhaps substantially different from ironport(in) for some strange and unexplained reason (and in the 'wrong' sense for that matter because 'out' filtering appears to be more severe and draconian than 'in' filtering) despite your constant assurances that any filtering is always set to mild/conservative or whatever.   

Please note that by ironport(in) I mean not using relay.plus.net but simply SMTPing to mx-ironport.core.plus.net as any external system would and by ironport(out) I am referring to wherever mail gets passed to after being accepted by relay.plus.net because I haven''t yet had time to find out if they are one and the same and if not try that route directly rather than via relay.plus.net.

Please also note that the fact my main A/C has filtering disabled is almost completely irrelevant in this discussion because as you are well aware,  I have several A/Cs all of which are intentionally configured differently for a variety of reasons including for proving whether PN's announcements, statements, explanations or denials are in fact correct as well as for assessing performance of the mail platform in general. The problem as I see it now is that whilst I can possibly just about guarantee receiving all my incoming mail by disabling PN filtering as/when necessary it would now appear that I cannot in any way guarantee that my outgoing mail will actually be sent despite being formally accepted by PN.  In addition to this, it also depends on which particular route I happen to send it.

Silent deletion of anything is fundamentally wrong and it will remain fundamentally wrong no matter how many times PN try to implement it, no matter what possible reasons PN may have for doing so and no matter how anyone tries to justify it as being acceptable and reasonable practice.  Occasional 'lost' data is a sad fact of life (and hopefully has a very small probability of occurring) but the intentional quiet dumping of customers' data without notification for whatever reason is most certainly not acceptable and nor should it be a sad fact of life.

No one would ever accept the guy at the Post Office counter or Royal Mail in general arbitrarily choosing which mail to try to deliver from all the mail they have accepted and then putting the rest straight into the recycling bin. Likewise, no one would ever accept the Postman arbitrarily choosing which mail to put through the letter box and then putting the rest straight into the recycling bin either.  But paying ISP customers are apparently expected to lie back, think of England and accept this as 'normal' and 'good' practice when it comes to e-mail.  It isn't.

I'm fairly sure that you already have examples of messages being silently deleted on receipt from ages ago so I would suggest that you might like to try these out again on both ironport(in) as well as ironport(out) and report your findings here because unless something has changed since stupid o'clock this morning, there's something not quite right and it's not performing as you would like me and other customers to believe that it is.

If I get some spare time later then I will investigate further, if not then I will have to leave it to you/PN to investigate ... and either fix it or provide a 100% guarantee that things are exactly as they should be and that no genuine mail is or will ever be lost because ironport is *that* good ... placing money where mouth is is always guaranteed to focus the mind and all that Tongue

« Last Edit: 22/01/2009, 16:52 by mikeb »

WARNING: The e-mail address on my profile is not my usual address, all messages sent via this site have been redirected elsewhere for test purposes. This could result in messages not being received in a timely manner or potentially not being received at all.
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« Reply #13 on 22/01/2009, 17:13 »
Help me here, but if my email client gets taken over by a bot and sends out thousands of similar messages in short time, wouldn't I want them to be silently dropped?  A bounce to tell me I was infected might be useful, but filling up the incoming servers with thousands of them and expecting me to download them would be adding insult to injury.

I'm also against silently dropping messages but, provided the criteria for identifying outgoing messages as blatant spam are sufficiently tight, I can see the point in this case.
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  • jelv
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« Reply #14 on 22/01/2009, 23:48 »
The same test messages sent via postini (to PN/postini enabled A/Cs only of course) were also accepted and delivered.

Huh?

How do you think you are sending via Postini? Everybody has been moved to IronPort.
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« Reply #15 on 22/01/2009, 23:53 »
NOTE: Just to make perfectly clear that this response is NOT some form of personal attack, I have bolded the word "hypothetically" that has always been there.  I also wish to make perfectly clear that whilst intended to be a little tongue-in-cheek I do mean exactly what I say here although it is most definitely NOT a personal attack,  it applies to absolutely anyone (including me should it ever happen) who may actually find themselves in the hypothetical situation that ChrisL described in his earlier post. I hope that is now clear to all but if not then please advise by PM exactly how you would like my personal opinion expressed so as not to cause any possible offence to anyone in particular because that is certainly not my intention.   It is my firm belief that absolutely anyone finding themselves infected by malware of some form or other is either stupid, careless or has security issues that need addressing as a matter of urgency although I will rather reluctantly accept that they might just have been unlucky even though I'm not in any way convinced that luck plays any significant part in determining if/when a user acquires a dose of malware on their system.


Help me here, but if my email client gets taken over by a bot ...

If you're stupid, careless, insecure or just possibly even plain unlucky enough (*) to host a bot, virus or whatever then that is entirely your own problem and not mine or anyone else's for that matter.  There is absolutely no one other than yourself to blame for the problem and therefore you should not expect anyone other than yourself to be in any way inconvenienced as a direct result of your stupidity, carelessness, lack of security or misfortune ... whichever best describes the particular circumstances under which you were hypothetically compromised.  In fact, it could perhaps be suggested that the "added insult to injury" as a result of PN doing the job properly and complying fully with the RFCs and so on would act as appropriate 'encouragement' for you to take better care in future to ensure that you don't get compromised in the first place due solely to you're own short-comings in the "not paying sufficient attention to detail" department   Wink

Or perhaps what you're really suggesting here is that it's reasonable and acceptable for genuine paying customers to suffer and/or effectively be expected to 'subsidise' the abusers and the stupid in much the same way as PN expect all the light users to subsidise the greedy b*ggers who grab all possible BW they can get their grubby mits on regardless of the effects to other users and the fact that light users have to suffer virtually all the same speed caps/limits/whatever as the abusers no matter how little they actually use their service Tongue

I would suggest that it has to be recognised that by far the vast majority of customers are genuine paying customers who are not infected and who do not abuse their service in any way, so far as e-mail is concerned anyway. It is these genuine customers who are frequently messed around and caused problems by the various measures allegedly put in place for the benefit of customers and not the relatively small minority of abusers of flavours various.  But then again, it's not really all about the customers' benefit at all is it ? That's more of a side-effect ... it's primarily all about the do$h in reality I'm sure.

(*) NOT that I seriously think "luck" actually comes into the equation at all TBH.

PS: As for proof of sending/receiving via postini ... it's quite simple really. It's all in the database headers as I'm sure you can well understand Mr.Jelv.  It would very much appear that reports of postini being dead and/or otherwise disconnected have been greatly exaggerated and all that   Cool

Quote
Delivery-date: Thu, 22 Jan 2009 00:45:55 +0000
Received: from [64.18.0.83] (helo=psmtp.com)
     by pih-sunmxcore18.plus.net with smtp (PlusNet MXCore v2.00) id 1LPnhi-0005Kh-N0
     blah, blah, blah.
   

« Last Edit: 23/01/2009, 02:19 by mikeb »

WARNING: The e-mail address on my profile is not my usual address, all messages sent via this site have been redirected elsewhere for test purposes. This could result in messages not being received in a timely manner or potentially not being received at all.
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