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Help, I think our email server is infected

D

Dyngoe

Senior member
Hi Y'all,

I recently recieved a bunch of emails returned to me that make me very suspicious. We're running our server offsite, so I believe they do a good job weeding out worms and the like, but we have recieved some interesting return mail recently. Here's an example:
----- The following addresses had permanent fatal errors -----
outlets@sweet2stepwiseu.com
clau@sweet.turdera.com
mellow@sweet.tender.soft.com
family@sweet.swin
captainmorgan@sweet.rum
field@sweet.on
nk3195@sweet.ocn.ne.jp
misti@sweet.net
pepi8@sweet.commo.de
cosmic@sweet.commo.de
pc@sweet.com
firco@sweet.com
dice@sweet.com
candi@sweet.com
patty@sweet.cakes
muffin@sweet.bakery.yum.yum
contemplatist@sweepwashingsa.com
buddhahood@sweepwashingsa.com
portunidae@sweepwashings.com
midpoint@sweepwashings.com
dol@sweepwashings.com
civilising@sweepwashings.com
enet@sweepthenet.com
ort@sweepstakesonline.com
newlook@sweepstakesonline.com
francisl@sweepstakesonline.com
fo@sweepstakesonline.com
builder@sweepstakesonline.com
decker@sweepstakemacedonia.net
bromine@sweepstakeletterhead.net
bromine@sweepstakeletterhead.n
duger@sweepsote.com
client@sweepscity.com
freeman@sweeping.up.the.opposition
conquer@sweeperssmuensterk.com
ed@sweepersj.com
oceans@sweepers.evidencep.net
environal@sweepage.com
conclusively@sweepage.com
mike@sweenywalter.com
dave@sweeney.com

----- Transcript of session follows -----
winner@isp.com... Deferred: Connection refused by isp.com.
553 sweet2stepwiseu.com.designinsites.com. config error: mail loops back to
me (MX problem?)
554 outlets@sweet2stepwiseu.com... Local configuration error
... while talking to sweet.turdera.com.:
>>> RCPT To:<clau@sweet.turdera.com>
<<< 550-Host server1.designinsites.com (www.designinsites.com)
[209.61.186.173] is not permitted
<<< 550-to relay through rh-01-ar.wavenet.com.ar.
<<< 550-Perhaps you have not logged into the pop/imap server in the last 30
minutes.
<<< 550-You may also have been rejected because your ip address
<<< 550-does not have a reverse DNS entry.
<<< 550 relaying to <clau@sweet.turdera.com> prohibited by administrator
550 clau@sweet.turdera.com... User unknown
... while talking to sweet.tender.soft.com.:
>>> RCPT To:<mellow@sweet.tender.soft.com>
<<< 550 <mellow@sweet.tender.soft.com>... Relaying denied
550 mellow@sweet.tender.soft.com... User unknown
553 sweet.swin.designinsites.com. config error: mail loops back to me (MX
problem?)
554 family@sweet.swin... Local configuration error
553 sweet.rum.designinsites.com. config error: mail loops back to me (MX
problem?)
554 captainmorgan@sweet.rum... Local configuration error
553 sweet.on.designinsites.com. config error: mail loops back to me (MX
problem?)

ETC.... ETC.....

Anyone know what the f&*K is going on? Thanks in advance.

As Always,
D
 
Sounds like your SMTP server is an open relay (SLAP) and you are seeing the results of people bouncing spam off your server.
 
If your server is an open relay, some places might not accept email from your domain/ip number. Make sure the relay is closed!
 
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