Re: Duplicate Emails

I have exactly the same results on fetchmail 6.4.15 - openSUSE 
Tumbleweed current release which reports:

     "This is fetchmail release 
6.4.15+POP2+GSS+RPA+NTLM+SDPS+SSL-SSLv2-SSLv3+OPIE+NLS+KRB5."


On 27/01/2021 13:41, Julian Bane via Fetchmail-users wrote:
> I have been running a test using fetchmail (6.3.26) on an openSUSE 
> Leap 15.2 server to retrieve email from a local email account. That 
> account has been sent 5 seperate emails. Three of the emails are to 
> single addresses, one is to two addresses and another is to three 
> addresses. As expected there are 8 separate emails in the local mail 
> spool file from the 5 I sent. As a test I am using the fetchmailrc file:
>
>     set postmaster root
>     poll cumulus protocol POP3 local mydomain.net envelope 
> "X-Original-To:"
>             username "user" password "pass" to * here fetchall keep
>             mda "echo 'Hello World - %T - %F'"
>
> The mda is just a dummy to see what is going on when I run it from the 
> command line.
>
> It retrieves all 8 emails correctly identifying the origonal recipient 
> and %T is substituted correctly for the different email adresses.
> Doing "fetchmail -V -f fetchmailrc" confirms that it is running in 
> multidrop mode.
>
> If I substitute 'myname' for the '*' (asterisk) in fetchmailrc, 
> fetchmail goes into singledrop mode as you would expect (checked with 
> the -V option) but also retrieves all 8 emails.
>
> I am not sure which way round it should be, multidrop or singledrop, 
> but I do want to remove duplicates and so want to retrieve just 5 
> emails from the spool file (have been reading "THE USE AND ABUSE OF 
> MULTIDROP MAILBOXES" on the man page). I have checked that the 
> message-IDs are the same and there are multiple recipients on the 
> 'To:' header of the relevant emails. I also have a copy of the spool 
> file if it would help.
>
> Any advice or insight would be most welcome.
>
> Thanks
>
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