[imp] Muiltiple copies of same message sent by IMP

[Research & Development]

Hi,

be aware that problem could be on other places, MTA or local delivery 
agent for example. We have that issue when mail is sent to several 
groups and an specific user belongs to more than one, user ends up with 
more than one copy. It is not an HORDE/IMP issue.

Depending on your MTA this happens or not. Sendmail does not allow 
multiple copies of an e-mail to get delivered, it does drop the extra 
copies, with the obvious time penalization due to the fact that it has 
to expand all the aliases before sending the e-mail and then crossing 
out the duplicated targets.

Postfix, due to its performance considerations, sends duplicated copies, 
since it does not expand aliases, it just sends.

Keep track of the transaction ID:
Apr 27 17:20:03 mailserver postfix/smtpd[17385]: 216556D67A: clie...
                                                  -----------
                                                      ID

if it is the same of different on both e-mail copies. SO you can dig deeper.

Hope this helps.

Fredrik Haglund wrote:
> Hi!
> 
> I receive complatints from my users that they receive multiple copies of 
> the same message. In all cases it appears that the sender is using IMP 
> for composing.
> 
> I can find multiple post in the access_log and maillog indicating that 
> it the same message is actually posted several times to server from the 
> browser.
> 
> Is this a correct analysis?
> 
> Could it be a "feature" of the browser to try to resend to recover from 
> timeouts or network problems? Or is it related to javascript? I doubt 
> that the user manages to click on the send button that many times.
> 
> 
> Main question is: Can IMP (compose.php?) be improved to prevent the same 
> message from being sent several times?
> 
> Kind regards,
> Fredrik Haglund,
> Sweden
> 
> 
> access_log:
> 212.151.252.253 - - [26/Apr/2006:22:05:28 +0200] "POST 
> /horde/imp/compose.php?uniq=18mqhdmzlmps HTTP/1.1" 200 4995 
> "http://webmail.stockholmpride.org/horde/imp/compose.php?
> actionID=reply&index=1005&identity=0&array_index=85&thismailbox=INBOX&uniq=1146081544436" 
> "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
> 212.151.252.253 - - [26/Apr/2006:22:05:28 +0200] "POST 
> /horde/imp/compose.php?uniq=18mqhdmzlmps HTTP/1.1" 200 73 
> "http://webmail.stockholmpride.org/horde/imp/compose.php?ac
> tionID=reply&index=1005&identity=0&array_index=85&thismailbox=INBOX&uniq=1146081544436" 
> "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
> (REPEATED 9 TIEMS - during 2 seconds)
> 
> maillog:
> Apr 26 22:05:29 www qmail: 1146081929.017970 new msg 6734278
> Apr 26 22:05:29 www qmail: 1146081929.018134 info msg 6734278: bytes 
> 6220 from <a.s at stockholmpride.org> qp 29584 uid 2020
> Apr 26 22:05:29 www qmail: 1146081929.048572 starting delivery 5419: msg 
> 6734278 to local 2-i.n at stockholmpride.org
> Apr 26 22:05:29 www qmail: 1146081929.048851 status: local 1/10 remote 0/20
> Apr 26 22:05:29 www qmail: 1146081929.182496 delivery 5419: success: 
> did_1+0+1/
> Apr 26 22:05:29 www qmail: 1146081929.182559 status: local 0/10 remote 0/20
> Apr 26 22:05:29 www qmail: 1146081929.182596 end msg 6734278
> Apr 26 22:05:29 www qmail: 1146081929.520894 new msg 6734278
> Apr 26 22:05:29 www qmail: 1146081929.520990 info msg 6734278: bytes 
> 6220 from <a.s at stockholmpride.org> qp 29596 uid 2020
> Apr 26 22:05:29 www qmail: 1146081929.528803 starting delivery 5420: msg 
> 6734278 to local 2-i.n at stockholmpride.org
> Apr 26 22:05:29 www qmail: 1146081929.528835 status: local 1/10 remote 0/20
> Apr 26 22:05:29 www qmail: 1146081929.566200 delivery 5420: success: 
> did_1+0+1/
> Apr 26 22:05:29 www qmail: 1146081929.566420 status: local 0/10 remote 0/20
> Apr 26 22:05:29 www qmail: 1146081929.566473 end msg 6734278
> Apr 26 22:05:30 www qmail: 1146081930.272686 new msg 6734278
> Apr 26 22:05:30 www qmail: 1146081930.272811 info msg 6734278: bytes 
> 6220 from <a.s at stockholmpride.org> qp 29613 uid 2020
> Apr 26 22:05:30 www qmail: 1146081930.280561 starting delivery 5421: msg 
> 6734278 to local 2-i.n at stockholmpride.org
> (REPEATED 9 TIMES)
> 
> 
> Platform info
> =============
> Fedora Core 2
> Apache/2.0.51 (Fedora)
> PHP Version 4.3.10
> (imp) H3 (4.1)
> (horde) 3.1.1
> 
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Eduardo Del Valle Flores-Guerra
FDR WebSite & DataBase Assistant
Member of the TNT
Phone: (511)-435-0890 EXT. 4129