Emails lost !

[eric le corre]

Mike Andrews <mikea <at> mikea.ath.cx> writes:

> 
> On Thu, Nov 17, 2011 at 08:53:39AM -0800, Scott Silva wrote:
> > on 11/17/2011 1:53 AM eric le corre spake the following:
> > >hello and sorry for my enlish
> > >
> > >
> > >I Have some trouble. I Have SpamAssassin version 3.3.1, 4.83.5 
mailscanner,
> > >postfix 2.8.2 on Ubuntu and MailWatch.
> > >This Server is configured as gateway for my Exchange 2010.
> > >
> > >users complain of not receiving emails. Apparently it's quite often. Users
> > >give me the address of the sender which certifies sending an email. On my
> > >exchange, I have no trace of the mail in question. On Mailscanner either,
> > >MailWatch in the mail does not appear either. In short, nothing a all. 
> > >What is
> > >even more annoying is that the sender does not receive an e-mail 
> > >non-delivery.
> > >So emails that are lost.
> > >
> > >Mailscanner in the logs I find nothing wrong.
> > >
> > >If someone could help me find an explanation .....
> > >
> > >I was wondering, but can be nothing to see there are a mailscanner script 
> > >that
> > >restarts the service regularly. Are the mails could not be lost just when
> > >mailscanner restarts? possible?
> > >
> > >thanks
> > >
> > >
> > And senders almost ALWAYS swear that they sent something, but when you ask 
> > them for proof like log snippets, they suddenly get silent...
> 
> In my experience, the problem is almost always caused by a fat-fingered
> E-mail address. I've never seen MailScanner lose a mail. Now, that being
> said, if you have some sort of milter running that REJECTs a mail before it
> gets to the DATA phase, you won't see the headers from that mail, and the
> log entr(y|ies) can be much harder to track down. I run a milter that does
> nothing but log CONNECTs, so that I know when a given IP address connected
> to my inbound filter.
> 


Hello and thanks for help.
It is difficult to me to understand english language, my breton language is 
better :-)
In postfix, i dont use Blacklist, just in mailscanner. Postfix is configure 
like this :

myhostname = mailhost.domain.fr
myorigin = domain.fr
mydomain = domain.fr
alias_maps = hash:/etc/aliases
mydestination = 
#mynetwork_style = host
relay_recipient_maps = hash:/etc/postfix/relay_recipients
transport_maps = hash:/etc/postfix/transport
relay_domains = $transport_maps
append_at_myorigin = yes
local_recipient_maps =
header_checks = regexp:/etc/postfix/header_checks
#relayhost = 
mynetworks = 127.0.0.0/8 172.31.0.0/16 10.131.0.0/16 10 10.4.0.0/16
mailbox_size_limit = 0
message_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
smtpd_client_connection_count_limit = 0
smtpd_client_connection_rate_limit = 0

what is surprising is that such an e-mail never arrived, apparently the sender 
has sent the same mail that is spent. 


"Assuming he is grep'n the servers IP. As the email from would not even be 
logged. "
The problem is that we have a email gateway from our provider, so all emails 
come from the same IP

"That should still leave some form of log entry..."
Maybe but users say "i don t receive email" but i dont know the hour, 
difficult to find something !