In article <db39745767b2b9c8c0bf424342a30b91@remailer.privacy.at>
"Anonymous Remailer (austria)" <mixmaster@remailer.privacy.at> wrote:

>In article <ZBDnG.8952$2P1.6199@fx15.iad>
>SEC3 <noreply@sec3.net> wrote:
>>
>> On 2020-04-21 1:35 a.m., Anonymous Remailer (austria) wrote:
>>
>> > is not|permitted to relay through this
>> > server without authentication.: 250 - Reset OK
>> > 18:53:41.571 > SMTP State: Disconnecting.
>> > 18:53:41.571 > SMTP Response: server.egitmenkoleji.com closing
>> > connection
>> >
>> > This has begun happening randomly since around Friday or
>> > Saturday April 18-19.  Happens when sending randomly via OmniMix
>> > using the SMTP server.
>>
>> Only a few remailers will let you use their email server as a relay
>> server. Congeries is not one of them.
>>
>> Try fleegle.mixmin.net:25 and know that your recipient address must be a
>> known remailer address. All other recipient addresses will result in
>> "relaying denied".
>
>"This has begun happening randomly "
>
>Host: snorky.mixmin.net:2525
>
>I don't choose the chain, mixmaster does.

Let's assume, that at "Anon" / "Remailer News" you told OM to go for a
random chain "* * * *", and with "Anon Mail S" / "Random Selection"
checked, OM has to select randomly an SMTP server from the list for
packet delivery. If that's a mail host, which doesn't relay packets to
others, but your (random) entry remailer selection ignores that
restriction, you get the error code you described above.

To prevent that kind of problem either remove all non-forwarding mail
hosts (like "congeries.org.uk") from the Anon SMTP Hosts list or change
their "Entry" remailer strategy to "Add entry remailer to chain" or
"Replace entry remailer by" with the name of the remailer associated
with that SMTP host (here "congeries") entered at the "Remailer" field,
resulting in now legit chain patterns "congeries * * * *" or "congeries
* * *" being sent to Mixmaster.