Click here to view a pdf version of our ecommerce guide.


ID #1091

Why do I get the message 550 IP in XBL SBL PBL RBL or SCBL when sending mail?

If you receive either of the 4 messages above when trying to send email, it would appear that outgoing mail is being blocked because your IP address (the dynamic address used to identify your computer on the internet) is appearing in a blacklist.

You can see more information by
1) Finding your IP address from

If you are receiving either:
550 IP in XBL,
550 IP in SBL, or
550 IP in PBL,
2) Entering this IP address into the Spamhaus advisory page at:-

If you are receiving either:
550 IP in SCBL or
550 IP in RBL
3) Entering this IP address into Spamcop at:-

It's appearing in this blacklist because either your computer, or a previous computer using the same dynamically assigned IP address, may have been infected by a trojan or virus, taking advantage of your computer to send spam.

Although this could just be a false alarm, caused by a previous computer on the same IP, we would recommend running a full virus, trojan and spyware scan on your computer - as well as ensuring you're using an active firewall.

Once you're sure your system is clean, there are details at the above link as to how you can remove yourself from the blacklist. Be aware though, if you are still affected, you will be relisted very quickly.

Tags: emails, emails common questions, emails problems

Related entries:

Last update: 2009-09-03 13:26
Author: SiteWizard Support
Revision: 1.2

{writeFacebookMsgTag} {writePrintMsgTag} {writeSend2FriendMsgTag} {writePDFTag}
Rate this FAQ

Average rating: 3.5 (4 Votes)

completely useless 1 2 3 4 5 most valuable

You cannot comment on this entry

SiteWizard : Lyndean House : 30-34 Albion Place : Maidstone : Kent : ME14 5DZ Tel No.08450 60 88 60 : Fax No.08450 60 88 61
© 1996- - SiteWizard is a Registered Trademark (Patent Pending)
Company Registration Number 03454062. Registered in England. VAT Number 683830804.