Mail delivery failed: returning message to sender

Avast Free Antivirus / Premium Security
1

Some of my outgoing emails (Thunderbird) get returned a few days later with this message. I’m in the middle of getting my ISP (Plusnet) to see if they can solve it, but I sense they’re going to wash their hands of it and blame Avast.

The latest message came back: "A message that you sent to the following recipient could not be delivered due to a permanent error. ** The remote server (numbers here: am I meant to put them here?) responded with: ** (email address here) (numbers here: am I meant to put them here?) mx-r1-lv.lailio.net Error: timeout exceeded This message was created automatically by mail delivery software on the server avasout08.

Plusnet seem to be latching on to the avasout08 bit at the end. Any ideas?

Thanks.

2

any change if you turn off avast mail shield?

3

Problem is, it’s only a fault with 2 business contacts. I could try emailing and saying’are you getting this’, and then turning off what you suggested and trying again, but it’s not very professional. Or I turn it off, email, and wait for days to see if it gets rejected.

4
This message was created automatically by mail delivery software on the server [b]avasout08[/b].
not sure this is related to avast http://www.ip-adress.com/ip_tracer/avasout08.plus.net
5

I’ve never heard of a selective conflict. If there’s a conflict it would affect all your sent emails.
Not just two.

6

Presumably it’s been judged to be a bulk-sender message.
2 listing in blacklists: http://dnsbl.inps.de/query.cgi?lang=en&ip=212.159.14.20
Given OK here: http://www.reputationauthority.org/lookup.php?ip=212.159.14.20&d=cox.net

polonus

7

yepp … and it should happen instant, not several days later

Some of my outgoing emails (Thunderbird) [b]get returned a few days later[/b] with this message.
8

Thanks for the help. What is that website telling me? Thanks.

9

Thanks all for the posts. The websites in the posts didn’t mean a lot to me. Went over my head. Sorry. Could you say more simply (or possibly more fully [which is the opposite of simply, I realise]) what I should try? Thank you.

10

Is it OK to bump this so it stays on page 1?

11

Each reply brings it back to the top.
There isn’t really much you can do except contact the 2 people through a different method and have them
supply you with a different email address or, have them fix the problem from their end.

12

Hi,

This suggests that there’s been a communication/network error between Plusnet’s outbound MTA (avasout08.plus.net) and the recipient MTA (mx-r1-lv.lailio.net).

mx-r1-lv.lailio.net seems to issue an SMTP banner when I try telnetting to it so it’s certainly not blocked from everywhere:

~$ telnet mx-r1-lv.lailio.net 25
Trying 178.16.20.92...
Connected to mx-r1-lv.lailio.net.
Escape character is '^]'.
220 mx-r1-lv.lailio.net ESMTP Postfix (Debian/GNU)
ehlo server
250-mx-r1-lv.lailio.net
250-STARTTLS
250-SIZE 52428800
250-VRFY
250-ENHANCEDSTATUSCODES
250 DSN

Doubt it. If it was a DNSBL rejection then the failed delivery report would be almost instantaneous. Those listed entries are also very old (the SORBS ones are from September 2014).

No it isn’t. It’s Plusnet’s outbound mail server.

Not necessarily. If there’s a network layer communicatiuon problem between Plusnet and the destination network then it would affect all emails sent via the Plusnet relays to this particular destination.

If the OP can share the Plusnet support ticket reference then I’ll take a quick look and see if there’s anything I can do to help.

13

Thanks, Bob

14

Thanks, Bob. Very detailed. Appreciated. I’ve PMd the number to you.

15

" If the OP can share the Plusnet support ticket reference then I’ll take a quick look and see if there’s anything I can do to help."

“Thanks, Bob. Very detailed. Appreciated. I’ve PMd the number to you.”

Was there anything you could do, Bob?

16

Apologies for the delay.

Just taken a look, added some info to your support ticket and given our ops guys a nudge. Hopefully we can find out what’s going on for you.

[i]Edit: Looks like out outbound servers /can/ communicate with the recipients’ which suggests there’s no longer a problem?

root@avasout08:~# telnet mx-r1-lv.lailio.net 25
Trying 178.16.20.92...
Connected to mx-r1-lv.lailio.net.
Escape character is '^]'.
220 mx-r1-lv.lailio.net ESMTP Postfix (Debian/GNU)
ehlo relay.plus.net
250-mx-r1-lv.lailio.net
250-STARTTLS
250-SIZE 52428800
250-VRFY
250-ENHANCEDSTATUSCODES
250 DSN
mail from:support@plus.net
250 2.1.0 Ok
rcpt to:info@academicsummer.co.uk 
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
from:support@plus.net
to:info@academicsummer.co.uk
subject: Test email
Hi, This is a simple test mail, please do not respond.
.
250 2.0.0 Ok: queued as 05032140CB7

Are you still having problems sending to these two addresses?