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If this is so widespread and you have a firewall in between you and the
other servers, I would place the heaviest suspicion on your firewall
instead. I did note from your logs that the blocking response was
received after exactly 4 minutes of inactivity, essentially IMail gave
up waiting for a response. Since the E-mail is being received, it
appears that something must be blocking the response from the receiving
server. If that response was blocked and you didn't receive it, that
would explain why it is being delivered since you don't have to
confirm, and this would also cause your server to requeue the message
and try again later. I'm not sure what your firewall might be doing that would block this response, but I would try testing without the firewall if possible in order to eliminate or confirm that as being the issue. Matt mail-lists wrote: I guess some mailservers/firewalls are more strict than others? This happens with at least 10 different domains that users at my company send to. I'll contact a couple to see if there's anything they can/will do about it.I do have a PTR record on the external IP of my firewall, but it points back to mail.cottonwoodfinancial.com. I didn't think it would be bad to have 2 PTR records that resolve to the same host name. Cavell McDermott Network Administrator Cottonwood Financial 972.753.0822 Office 214.403.4918 Cell http://www.thecashstore.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Matt Sent: Tuesday, March 01, 2005 10:09 AM To: [email protected] Subject: Re: [IMail Forum] Blocking call cancelled - but have PTR This is likely not your fault, but a problem with the way that the receiving server is handling the E-mail. They never replied saying that they received it properly so IMail should keep trying until it does or it gets too old. This is likely to be the result of poor spam blocking software on their end. See the following post by Scott for a good explanation of what happened: http://www.mail-archive.com/[email protected]/msg63677.html The only thing that you can do is try to make sure that there is no reason that you might get blocked. Your server's IP returns both an alias and a host record for a reverse DNS query and I'm not sure if that is normal, but I couldn't find anything in the blacklists or your headers that would indicate any problems. If this was an error with the connection, it wouldn't be happening multiple times in the same way on the same message. It is likely not your problem, and maybe beyond what you might be able to influence outside of that PTR record in the event that it is not standard. Matt mail-lists wrote: -- ===================================================== MailPure custom filters for Declude JunkMail Pro. http://www.mailpure.com/software/ ===================================================== |
