Rejecting messages when disk space is getting scarce is a good thing, but a
hardcoded percentage is not really optimal. Having 200GB left doesn't seem
like a reason to reject messages to me.


On 10 May 2014 15:50, Barbier, Jason <[email protected]> wrote:

> Well the idea is much like what the RFC says to do, if your server is
> resource constrained you send a temp fail and let the other side keep
> trying until the receiving end is good or you hit the TTL on the sending
> side. In practice this is a good idea since in you fill the queue disk you
> will have problems deleting files from it at best, at worst you now locked
> yourself out. There maybe cases where this behavior may feel undesirable
> but that means your script or app needs to learn to be more resilient not
> that your MTA needs to clobber the system. But also every MTA does this
> also and you will be hard pressed to find one that doesn't.
>  On May 10, 2014 2:43 AM, "Julius" <[email protected]> wrote:
>
>> Hello opensmtpd-misc!
>> If there is less than 5% of disk space left, OpenSMTP rejects messages.
>> That is a compile-time/in-source constant. The restriction is simple to
>> remove from smtpd/queue_fs.c but I want to know what the big idea behind
>> this is. Mail is very precious, even the output from cronjobs, which will
>> be directly lost in such a situation.
>>
>> More Info:
>> I'm running opensmtpd on my NAS where the var-partition is close to full.
>> All mail is relayed, so I find the restriction especially annoying. Also,
>> at 5%, I still have 200GB of space left. I could store 100 000 000 of the
>> average mail that machine handles.
>> Mai 10 11:15:58 micpi1 smtpd[559]: smtp-in: New session 5fc97cda452fbcee
>> from host 0@localhost [local] Mai 10 11:15:59 micpi1 smtpd[551]: warn:
>> not enough disk space: 4% left Mai 10 11:15:59 micpi1 smtpd[551]: warn:
>> temporarily rejecting messages Mai 10 11:15:59 micpi1 smtpd[559]: smtp-in:
>> Failed command on session 5fc97cda452fbcee: "MAIL FROM:<b
>> Mai 10 11:15:59 micpi1 smtpd[559]: smtp-in: Closing session
>> 5fc97cda452fbcee
>> Julius
>>
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