Date: Wed, 18 Mar 2009 00:31:32 -0400 From: Bill Cole dovecot-20061108@billmail.scconsult.com Subject: Re: [Dovecot] Dovecot LDA and "undeliverable" emails To: Dovecot Mailing List dovecot@dovecot.org Message-ID: 49C07924.7080707@billmail.scconsult.com Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Kat Wisnosky wrote, On 3/16/09 1:35 PM:

...

I googled around looking for this, apparantly my google-fu is failing this morning. I just switched over to using a Postfix/Dovecot virtual set-up with Dovecot as the delivery agent. One of my users mistyped his email address when he paid for something through Paypal and the reciept got forwarded to everyone. It didn't bounce or just go to Postmaster, it was delivered to every valid user on the system.

Below is my conf comments stripped:

Dovecot config is irrelevant. This is a Postfix configuration issue. You've provided the proof of that:

...

And here's the mail.log from a test message that I sent out: Mar 16 09:52:46 byron postfix/smtpd[24082]: C75E84F006D: client=unknown[xxx.xx.xxx.xx], sasl_method=LOGIN, sasl_username=kat@amtpolitics.com Mar 16 09:52:46 byron postfix/cleanup[24085]: C75E84F006D: message-id=46497375E9264D2BA3BFB31BE37918BC@Kat Mar 16 09:52:46 byron postfix/qmgr[19409]: C75E84F006D: from=kat@amtpolitics.com, size=887, nrcpt=10 (queue active)

That says that the message from you had 10 recipients as Postfix was queueing it, *BEFORE* it tried any delivery. It is not possible for the Dovecot LDA to be involved in whatever caused the message to have 10 recipients.

If you cannot figure out why that is happening from looking at your Postfix config, I would suggest a visit to the Postfix Users' list.

Uhg, I win the CluelessnUnobservant Award for this. Thanks everyone for the followups.

I caught that myself yesterday and fixed the problem on Postfix's side. To sum up in case anyone else runs in to this, the mistake I made was in assuming that Postfix just made the handoff to Dovecot and that Dovecot would handle the rest, so I commented out the parts of the old config where Postfix handled this when I was using Postfix virtual transport. Once I restored those and gave Postfix the query it needed, it worked fine.

Thanks for bearing with me, everyone.

Kat