Recipient address rejected: aol.com

[Grant]

Does this mean the email address doesn't exist?

<exa...@aol.com>: host mailin-04.mx.aol.com[64.12.138.161] said: 550 5.1.1
<exa...@aol.com>: Recipient address rejected: aol.com (in reply to
RCPT TO command)

- Grant

[DTNX Postmaster]

Yes, it should mean exactly that;
http://tools.ietf.org/html/rfc3463#section-3.2

X.1.1 Bad destination mailbox address

The mailbox specified in the address does not exist. For
Internet mail names, this means the address portion to the left
of the "@" sign is invalid. This code is only useful for
permanent failures.

Mvg,
Joni

[King Cao]

It depends on MTA. From the log, AOL may not use Postifx or customized the checking on RCPT_TO stage (PolicyD or milter, etc).

However, the result is that AOL MTA don't accept it for your MAIL FROM, RCPT TO parameters. 

Regards,

King 

2013/8/23 DTNX Postmaster <postm...@dtnx.net>

[DTNX Postmaster]

On Aug 23, 2013, at 09:25, King Cao <spee...@gmail.com> wrote:

> It depends on MTA. From the log, AOL may not use Postifx or customized the checking on RCPT_TO stage (PolicyD or milter, etc).
>
> However, the result is that AOL MTA don't accept it for your MAIL FROM, RCPT TO parameters.

http://postmaster.aol.com/Postmaster.Errors.php

The AOL MTA rejects it because the mailbox does not exist. A policy
rejection results in a different return code.

Mvg,
Joni

--

[Grant]

>> It depends on MTA. From the log, AOL may not use Postifx or customized the checking on RCPT_TO stage (PolicyD or milter, etc).
>>
>> However, the result is that AOL MTA don't accept it for your MAIL FROM, RCPT TO parameters.
>
> http://postmaster.aol.com/Postmaster.Errors.php
>
> The AOL MTA rejects it because the mailbox does not exist. A policy
> rejection results in a different return code.

I originally started this thread because I received several "Recipient
address rejected" bounces from different aol.com addresses in the last
24 hours. I have just now received this:

Final-Recipient: rfc822;mas...@aol.com
Action: delayed
Status: 4.0.0 (temporary failure)
Diagnostic-Code: smtp; 4.3.2 - Not accepting messages at this time
554-'5.7.1 : (RLY:B1)
http://postmaster.info.aol.com/errors/554rlyb1.html' (delivery
attempts: 0)

That URL says the following which does sound like a policy violation:

"This error message is a dynamic block on our system. Dynamic blocks
are placed on an IP address when the IP's statistics break our
threshold. These are automated blocks that are removed by the system
within 24 hours once the complaints are again below the threshold."

Could "statistics" refer to the several messages sent from my IP
address to non-existent aol.com addresses within the last 24 hours?

- Grant

[DTNX Postmaster]

On Aug 23, 2013, at 12:16, Grant <email...@gmail.com> wrote:

>>> It depends on MTA. From the log, AOL may not use Postifx or customized the checking on RCPT_TO stage (PolicyD or milter, etc).
>>>
>>> However, the result is that AOL MTA don't accept it for your MAIL FROM, RCPT TO parameters.
>>
>> http://postmaster.aol.com/Postmaster.Errors.php
>>
>> The AOL MTA rejects it because the mailbox does not exist. A policy
>> rejection results in a different return code.
>
> I originally started this thread because I received several "Recipient
> address rejected" bounces from different aol.com addresses in the last
> 24 hours. I have just now received this:
>
> Final-Recipient: rfc822;mas...@aol.com
> Action: delayed
> Status: 4.0.0 (temporary failure)
> Diagnostic-Code: smtp; 4.3.2 - Not accepting messages at this time
> 554-'5.7.1 : (RLY:B1)
> http://postmaster.info.aol.com/errors/554rlyb1.html' (delivery
> attempts: 0)
>
> That URL says the following which does sound like a policy violation:
>
> "This error message is a dynamic block on our system. Dynamic blocks
> are placed on an IP address when the IP's statistics break our
> threshold. These are automated blocks that are removed by the system
> within 24 hours once the complaints are again below the threshold."
>
> Could "statistics" refer to the several messages sent from my IP
> address to non-existent aol.com addresses within the last 24 hours?

Yes. It looks like you sent too many messages to non-existent
mailboxes, and are therefore blacklisted for 24 hours after you stop
doing that. Or at least being deferred.

You aren't lishwashing or anything, are you? Can't imagine they'd do
that for just a few of them.

Mvg,
Joni

[Grant]

No way. I don't think I've seen more than a few bounces within the
last day or two. Maybe it's too high of a percentage good mail to bad
mail? I need to start disabling an email address when I get a bounce
from it.

- Grant