Releasing emails from quarantine with sendmail

[Eduardo Casarero]

Well, today i've learned something.

From: http://www.sendmail.org/~ca/email/doc8.12/op-sh-1.html

*For initial mail submission, i.e., if one of the options -bm (default), -bs,
or -t is specified, submit.cf is used (if available), for other operations
sendmail.cf is used.*

So, all the sendmail behaviour was configured in submit.cf not sendmail.cf.
I moved submit.cf and created a link between sendmail.cf and submit.cf. So
submission will behave the same as the daemon, using the ../mqueue and
trying to deliver the email first (to the final MTA), and if it fails it
will store it in the regular queue.

My first tests went ok, however i will give this further testing to try to
find any nasty side efect of this.

Eduardo.


2011/3/30 Eduardo Casarero <ecasarero at gmail.com>

> I thought this was a winner, but although the email is not scanned the
> "Always looked up last" is still triggered and a db record is created.
>
> I also retried the sendmail line with -OQueueDirectory=/var/spool/mqueue
> but i get a rare permission error on the queue, i think that option is not
> valid using sendmail to send email, it just works when sendmail is a daemon
> recieving emails (maybe a consecuence of the monolithic architecture).
>
> As a last option i will tweak the "Always looked up last" function to avoid
> logging specific localhost traffic. If i found a workaround with sendmail i
> will post  it,
>
> Thanks for all the comments,
>
> Eduardo.
>
> 2011/3/30 Alex Neuman <alex at vidadigital.com.pa>
>
>> Might I suggest "not to scan e-mail from 127.0.0.1 and to:yourdomain.com"
>> just to avoid a bad script from being (mis)used to send e-mail out from your
>> server onto third parties? You *usually* don't release mail to third
>> parties, and in such exceptions you might want to make additional exceptions
>> for those third parties.
>>
>> On Mar 30, 2011, at 11:15 AM, Jules Field wrote:
>>
>> > One way to solve this is to not scan mail originating from 127.0.0.1 and
>> then just use sendmail to re-inject the message. As it's from localhost,
>> MailScanner will ignore it once you put that rule in place.
>> >
>> > On 29/03/2011 19:31, Eduardo Casarero wrote:
>> >> Hi everybody, does anyone know if it is possible to "release" an email
>> and queue it in the sendmail outbound queue without being processed by
>> MailScanner? I want to avoid MS because it generates a duplicated record in
>> the DB. We used Mailwatch release method for some time and then a custom
>> script to feed the released email to sendmail, but both options makes the
>> email to be reprocesed by MS.
>> >>
>> >> I searched and read about sendmails options, but i coudnt find anything
>> usefull. ¿How does MScanner send HAM emails to recipients? copying df* and
>> qf* to the outbound queue and firing a sendmail process to deliver that
>> particular email?
>> >>
>> >> Any comment/idea would be appreciated.
>> >>
>> >> Thanks,
>> >>
>> >> Eduardo.
>> >
>> > Jules
>> >
>> > --
>> > Julian Field MEng CITP CEng
>> > www.MailScanner.info
>> >
>> > Buy the MailScanner book at www.MailScanner.info/store
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>> >
>> > PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654
>> > Follow me at twitter.com/JulesFM
>> >
>> > 'All programs have a desire to be useful' - Tron, 1982
>> >
>> >
>> > --
>> > This message has been scanned for viruses and
>> > dangerous content by MailScanner, and is
>> > believed to be clean.
>> >
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>>
>> --
>>
>> Alex Neuman van der Hans
>> Reliant Technologies / Vida Digital
>> http://vidadigital.com.pa/
>>
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>>
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>>
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>>
>
>
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