Re: [qmailtoaster] Close to quota message or scam

2020-12-04 Thread Gary Bowling

  
  


Yes, this is why I would like to get the quota graph working in
  squirrelmail again. This was the easy place for customers to see
  if they actually had a quota problem if they got these scam
  messages. 



Gary



On 12/4/2020 9:58 AM, Angus McIntyre
  wrote:

"Valued
  Customer" is such an obvious giveaway that I wouldn't bother
  looking any further. It's a very common phrase in scams of all
  kinds. Your message is a scam and it almost certainly came from
  outside your system.
  
  
  Incidentally, on the subject of quota messages, I did see an
  interesting case the other day. Mail was bouncing from one user
  and the bounce messages claimed that the message couldn't be
  delivered because the user was over their quota.
  
  
  I knew this couldn't be the case, because I don't have quotas and
  in fact the user in question was 'virtual': a non-existent user
  who was being processed by the catch-all and delivered directly to
  a mailbox (a sub-mailbox of another user who was having no trouble
  receiving mail).
  
  
  I finally tracked it down to a dovecot file -- 'dovecot-uidlist',
  if I remember correctly -- that had the wrong ownership. It was
  owned by root instead of vpopmail, so dovecot couldn't read it and
  was bouncing mail with that spurious 'over quota' message.
  
  
  This doesn't relate to your case -- which sounds like simple
  phishing -- but I thought I'd share it just for general
  enlightenment. If you get weird quota-related bounces, remember to
  check ownership and permissions.
  
  
  Angus
  
  
  
  
  Jeff Koch wrote on 12/4/20 9:41 AM:
  
  

One of our QT7 mailserver accounts got an email addressed to a
non-existent account that was picked up by his catch-all with
the subject


'Mail quota warning - You are close to your quota'


He's using about 0% of his quota which I confirmed by manually
checking the space used by his account. The header on this email
says almost nothing except the email came from Mailer-Daemon and
it's addressed to 'Valued Customer:;'


I've seen over-quota messages but never a warning message.  Is
there anything in QT7 that could be generating such a message.


Thanks,


Jeff Koch






  
  
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Re: [qmailtoaster] Close to quota message or scam

2020-12-04 Thread Angus McIntyre
"Valued Customer" is such an obvious giveaway that I wouldn't bother 
looking any further. It's a very common phrase in scams of all kinds. 
Your message is a scam and it almost certainly came from outside your 
system.


Incidentally, on the subject of quota messages, I did see an interesting 
case the other day. Mail was bouncing from one user and the bounce 
messages claimed that the message couldn't be delivered because the user 
was over their quota.


I knew this couldn't be the case, because I don't have quotas and in 
fact the user in question was 'virtual': a non-existent user who was 
being processed by the catch-all and delivered directly to a mailbox (a 
sub-mailbox of another user who was having no trouble receiving mail).


I finally tracked it down to a dovecot file -- 'dovecot-uidlist', if I 
remember correctly -- that had the wrong ownership. It was owned by root 
instead of vpopmail, so dovecot couldn't read it and was bouncing mail 
with that spurious 'over quota' message.


This doesn't relate to your case -- which sounds like simple phishing -- 
but I thought I'd share it just for general enlightenment. If you get 
weird quota-related bounces, remember to check ownership and permissions.


Angus



Jeff Koch wrote on 12/4/20 9:41 AM:


One of our QT7 mailserver accounts got an email addressed to a 
non-existent account that was picked up by his catch-all with the subject


'Mail quota warning - You are close to your quota'

He's using about 0% of his quota which I confirmed by manually checking 
the space used by his account. The header on this email says almost 
nothing except the email came from Mailer-Daemon and it's addressed to 
'Valued Customer:;'


I've seen over-quota messages but never a warning message.  Is there 
anything in QT7 that could be generating such a message.


Thanks,

Jeff Koch







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[qmailtoaster] Close to quota message or scam

2020-12-04 Thread Jeff Koch


One of our QT7 mailserver accounts got an email addressed to a 
non-existent account that was picked up by his catch-all with the subject


'Mail quota warning - You are close to your quota'

He's using about 0% of his quota which I confirmed by manually checking 
the space used by his account. The header on this email says almost 
nothing except the email came from Mailer-Daemon and it's addressed to 
'Valued Customer:;'


I've seen over-quota messages but never a warning message.  Is there 
anything in QT7 that could be generating such a message.


Thanks,

Jeff Koch







[qmailtoaster] SOLVED (was: Re: [qmailtoaster] maildrop and qmail)

2020-12-04 Thread Angus McIntyre

I figured out what was going wrong with maildrop.

The environment variable SHELL (which holds the shell specified to 
process maildrop forwards and pipes) defaults to '/bin/nologin'. 
Obviously, this can't handle pipes or spawn a sendmail process to 
forward mail.


So making sure that your maildrop filter file contains something like:

SHELL=/bin/bash

should take care of it.

Note also that string arguments to 'to' need to be quoted, so that the 
correct form is:


to "!someaddr...@example.com"

With this problem solved, I think maildrop makes a pretty good 
replacement for procmail for final delivery filtering on your qmailtoaster.


Angus


Angus McIntyre wrote on 11/29/20 10:01 PM:
Yeah, for some reason that doesn't work for me. I'm not sure if I need 
to be running maildrop in a different mode or something, but when I tell 
it:


 to "!someaddr...@example.com"

it logs:

 Err!: !someaddr...@example.com

and throws the message back in the queue. If I try:

 to !someaddr...@example.com

it doesn't throw an error, but it writes everything locally to a file 
named '0'. Attempts to pipe the output through something also produce 
'Err!' errors.


I haven't yet found a way to get it to be more explicit about what's 
bothering it (verbose logging doesn't seem to work).


It handles local deliveries without problems, but anything else seems to 
cause mysterious errors.


Thanks nonetheless,

Angus



Eric Broch wrote on 11/29/20 9:14 PM:
https://serverfault.com/questions/151262/how-can-i-use-maildrop-to-forward-a-copy-to-another-email-address 



On 11/29/2020 6:59 PM, Angus McIntyre wrote:

Does anyone have any experience of using maildrop with qmail?

I'm able to get maildrop to filter and deliver locally without 
problems, but attempts to forward to remote (or local) addresses just 
cause maildrop to report an unhelpful "Err!".


If anyone has made this work successfully, I'd welcome some guidance.

Thanks

Angus


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[qmailtoaster] Email is not delivered

2020-12-04 Thread ChandranManikandan
Hi Friends,

We are trying to install a fortigate firewall on our network to protect
email servers.
Our email server was configured on a private ip and one to one NAT map in
the firewall.
After setup firewall, firewall team to put private dns like firewall router
ip in server.
We are unable to receive emails after configuring router ip and our isp dns
ip in our server.

Sample below for smtp log /var/log/qmail/smtp/current

CHKUSER accepted sender: from  remote

rcpt <> : sender accepted

Empty showing in rcpt<>

After the fallback firewall it is working fine like rcp  found
an existing recipient and got delivered.

my tcp.smtp below
127.:allow,RELAYCLIENT="",RBLSMTPD="",NOP0FCHECK="1"

Appreciate any one who helps me.

-- 


*Regards,Manikandan.C*