doesn't zip with greylisting

Tim Wicinski
Thu Dec 18 03:09:32 UTC 2003


I've gotten two complaints today about servers getting a greylisting 
embargo caused mail to be rejected.  Mine came from CUNYVM.CUNY.EDU

Attempted mail delivery to remote mail server at least 2 times, now
giving up.  Last error message was:
452 4.2.1 mail hBI0J2Ff087088 from temporary greylist embargoed

I have one other as well I'm trying to chase down.

I'm using the stock embargo time limits.

Gary Mills wrote:

> I had a complaint that e-mail from users was no longer
> working since I set up greylisting on our mail servers.  To confirm
> this, I set up a free e-mail account on, and sent myself
> some mail.  This showed up in the sendmail log:
>   Dec 17 20:01:35 electra sm-mta[22449]: [ID 801593] hBI21WiJ022449: to=<>, delay=00:00:02, pri=30750, stat=mail hBI21WiJ022449 from temporary greylist embargoed
> A message beginning this way also appeared in my INBOX:
>   Mail Delivery Error.
>   Unable to Deliver to the following recipient(s).
>   <>:
> 4.2.1 mail hBI21WiJ022449 from 
>   temporary greylist embargoed
> Apparently,'s e-mail system treats this as a permanent
> failure, and does not retry delivery.  I'm not impressed!
> Are there any other mail systems that behave this way?  Is there
> anything I can do in DCC to allow their mail to get through?  They
> seem to use a bunch of outgoing SMTP servers.  I suppose that
> greylist whitelisting by HELO or mail host are my only choices.

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