Thomas Hood wrote: > By the way, I can't write to you directly because: > > [EMAIL PROTECTED] > Delay reason: SMTP error from remote mailer after RCPT TO:<[EMAIL > PROTECTED]>: > host mx.meyering.net [82.230.74.64]: 450 <[EMAIL PROTECTED]>: > Recipient address rejected: Greylisted for 16990 seconds (see > http://isg.ee.ethz.ch/tools/postgrey/help/meyering.net.html) > > so I'll have to communicate with you via Debian coreutils bug report logs.
SMTP 4xx response codes are temporary failures only. It is not a permanent rejection. The mail is only deferred. These are not specific to greylisting and also occur during DNS outages and when the disk fills up and are a normal part of smtp flow control. Your mail is not being permanently blocked. It is a greylist, not a blacklist. Your mta will retry the delivery and the mail will be delivered on a future queue delivery run. Your mta will allow messages to stay in your mail queue up to the bounce queue lifetime. Only at that time will the mail be permanently rejected. On most mta configurations that is five days. Because the greylist time is less than this your messages will almost certainly be delivered. Upon receipt of a valid message the target host will add the sender's IP address to its list of previously seen addresses. Future deliveries will incur no delay. Delays are imposed only upon initial contact. Subsequent contacts will be delivered without delay. You may have seen a delivery delay warning from your mta. Classic Sendmail for example would by default be configured to send a notification that a delay had occurred after four hours. Because Jim's grelist time shows 16990 seconds or 4.7 hours which is longer than the typical four hour default this may trigger a delivery delay warning. But that message should also have said clearly that it was not a bounce and that delivery of your message would be attempted up to the queue lifetime. These messages are considered obsolete by many on the internet. It is frequently a source of backscatter spam. Postfix as one example disables the sending of that warning message by default. Bob -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
