Mailserver 554 Permanent Problems Message

Discussion in 'Server Operation' started by asyadiqin, Nov 12, 2007.

  1. asyadiqin

    asyadiqin New Member

    Hi all.

    This is sort of like a follow-up on a problem I have with the same mailserver but now I have some new informations that could probably help someone an idea on what is going on.

    To recap, someone from Company A is complaining that they have not been receiving any emails sent from our mailserver. They have also said that we have been ignoring emails sent by them to our staff.

    Now, they are saying that they are receiving returned emails that says that their mailsever have encountered errors sending emails to our mailserver.

    I have checked our mail log and don't actually see any errors. Is there any way for me to find out what is going on and sort of investigate this further using any tools or something to make sure that our mailserver are working fine. At this point, we are just pointing blame to each other's mailserver.

    A different question. If we were to create a new mailserver, is there an easy way to migrate all the users and emails from our old mailserver to the new mailserver? FYI, the current mailserver is setup using the guide in this site, ie. "Virtual Users With Postfix, PostfixAdmin, Courier, Mailscanner, ClamAV On CentOS". However, the current mailserver is running on FC5.
  2. asyadiqin

    asyadiqin New Member


    I have just checked the maillog for the past 2 days and this is what I found in regards to their email from their mailserver.

    After a few lines, I get this in the logs

    I am not sure if this is related but after the first few entries, there is some errors about the RBL Lookup

    Hope that is helpful in sorting out my issue
    Last edited: Nov 12, 2007
  3. asyadiqin

    asyadiqin New Member

    OK. Another update.

    I've really looked into our mailserver log and seen several of these RBL lookup errors, mostly affected the following :-

    I've noticed that before losing connecting from their mailserver, there was always a RBL lookup error, with their reversed IP

    Could this be the reason for the failed email delivery? Is there a way to correct this RBL lookup error?
    Last edited: Nov 12, 2007
  4. falko

    falko Super Moderator ISPConfig Developer

  5. asyadiqin

    asyadiqin New Member

    Basically what happened was that whenever the remote mailserver tried to connect to the local mailserver, there was a RBL lookup error. This only happens with and

    Because of that RBL lookup error, the connection was terminated. I have removed the 2 RBL server from As far as I know from surfing the net, is no longer active, while have changed it to However, I am still getting RBL lookup error with, so I have removed that from too.

    Anyone have these RBL lookup errors with What causes this lookup errors and is there any alternative spamhaus server that I can use that won't cause these RBL lookup errors.

    Thanks again.
  6. falko

    falko Super Moderator ISPConfig Developer

    I think this simply means that the remote server is blacklisted.
  7. asyadiqin

    asyadiqin New Member

    I don't think the IP of the remote server is blacklisted. I've checked against Spamhaus IP Address Lookup on their website and it is not listed.

    Why would a blacklisted IP caused a RBL lookup error? How do you use spamhaus's spamfilter server, ie. Before I removed that entry from postfix's Below is a clip from my

    I don't have any issues with the other RBL servers, but with the above configurations, occasionally I get RBL lookup errors with

    As you can see, the IP of the remote mailserver connected above is, which is not blacklisted on any of the Spamhaus's lists.

    Anyone have any idea what is wrong? Do I need to configure something to make my mailserver work with Spamhaus's server? ie.

    Thanks again.
  8. falko

    falko Super Moderator ISPConfig Developer

    Please check here:

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