Morten W. Petersen skrev:
> Heiko Schlittermann skrev:
>
>> Morten W. Petersen <morten@???> (Do 27 Aug 2009 16:55:15 CEST):
>>
>>
>>> Hi,
>>>
>>> I'm trying to use an external python script to verify that a remote SMTP
>>> host
>>> can accept a recipient. Using Exim's callout didn't work (getting too many
>>> write lock issues).
>>>
>>> The configuration looks like this:
>>>
>>> [...]
>>> begin acl
>>>
>>> greylist_acl:
>>> warn set acl_m8 = ${run{/opt/nidelven/do_remote_callout.py
>>> $local_part $domain $sender_address $sender_host_address
>>> $sender_helo_name}{$value}{error}}
>>> log_message = greylisting ACL result: $acl_m8
>>> accept
>>> condition = ${if eq{$acl_m8}{greylist}{1}}
>>> deny
>>> [...]
>>> However, I don't see any entries in the log, so it doesn't look like the
>>> command
>>> or the logging is being run. Am I missing something to get logging working?
>>>
>>>
>> First question: did you configure the use of your greylist_acl?
>> When it should run at „RCPT TO“ time, you should set (in the global part
>> of the config)
>>
>> acl_smtp_rcpt = greylist_acl
>>
>> And, I'd write the ACL this way:
>>
>> greylist_acl:
>> accept condition = ${run{/opt/nidelven/do_remote_callout.py \
>> $local_part \
>> $domain \
>> $sender_address \
>> $sender_host_address \
>> $sender_helo_name}\
>> {true}{false}}
>> deny
>>
>> And in this case you should make sure, that your command exists with a
>> zero exit value (as normal programs do) on success and with anything
>> else on verification error.
>>
>> On the other hand, I'd investigate the problems regarding the built in
>> callout verification, except for some special requirements it should
>> just work.
>>
>>
>>
>>> What is the right way to access the result of the command? Is that
>>> stored in
>>> acl_m8? Does $runrc represent the exit value of the command?
>>>
>>>
>> Should. Should.
>>
>>
>>
>>> What's the right syntax for checking the exit value against 0, 1 etc?
>>>
>>>
>> condition = $acl_m8
>>
>> should suffice.
>>
>> But(!) I may be wrong, so double check my answer and have a look into
>> the spec file.
>>
>>
>
> $acl_m8 seems to be empty, but runrc does the trick. Thanks for the help! :)
>
OK, I now have a working system which checks the remote SMTP whether it
accepts the recipient.
However, the remote SMTP is sometimes unavailable.. is it possible to tell
Exim to give a temporary error if that's the case?
-Morten
--
Morten W. Petersen
Manager
Nidelven IT Ltd
Phone: +47 45 44 00 69
Email: morten@???
