[Building Sakai] mail sending failures - greylisting

[Steve Swinsburg]

Hi David and Matthew,

Just the usual mail server setup for this domain (mail.mydomain.ac.uk)  
but I don't have access to it. Looks like they had recently locked it  
down. After waiting the 10 minutes mails are getting though. AFAIK it  
just needs a whitelist entry to turn it off.

Thanks though :)

cheers,
Steve

---
Steve Swinsburg
Portal Systems Developer
Centre for e-Science
Lancaster University
Lancaster
LA1 4YT

email: s.swinsburg at lancaster.ac.uk
phone: +44 (0) 1524 594870







On 12 Mar 2009, at 11:14, David Horwitz wrote:

> Steve,
>
> Might help if we knew something about the specifics of your mail  
> setup. Do you forward the mail to an MTA on the same machine, or  
> another  MTA (e.g. smtp.lacaster.ac.za)?
> Do you see anything in the recieving MTA logs?
>
> D
>
> Matthew Buckett wrote:
>>
>> On Thu, Mar 12, 2009 at 10:59 AM, Steve Swinsburg
>> <s.swinsburg at lancaster.ac.uk> wrote:
>>
>>> Hi all,
>>> I am getting the following errors when sending mail from within  
>>> Sakai,
>>> either via Site Info > Add Participants, or via the Mailtool:
>>> Failed to send email.
>>> Error message: Sending failed; nested exception is: class
>>> javax.mail.SendFailedException: Invalid Addresses;
>>> nested exception is: class javax.mail.SendFailedException: 451 4.7.1
>>> Greylisting in action, please come back in 00:10:00
>>> I've never seen this before. the email addresses I am supplying  
>>> are valid
>>> and varied (ie not all the same domain), but it returns this error  
>>> so
>>> quickly that I think it's something to do with the mail setup on  
>>> this end,
>>> not the receiving end.
>>>
>>> Anyone know what the go is here?
>>>
>>
>> Shot in the dark...
>>
>> We at one point had problems with outbound mails getting rejected
>> because we weren't giving a valid SMTP HELO command, I didn't track
>> down what was causing this but just forced javax.mail to use a good
>> hostname.
>>
>> http://jira.sakaiproject.org/jira/browse/SAK-11775
>>
>> Now we run a SMTP server on localhost and sakai just delivers to
>> localhost which then forwards all the mail to our institutional
>> servers. This is much more robust generally (once setup).
>>
>>

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