WTF does this mean?
27 May 2004, 03:15 PM
#1
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WTF does this mean?
Email to a particular address keeps bouncing with the following error:
550-Invalid HELO (Xxxxxx) used by
62.249.xxx.xxx. See RFC1123 s5.2.5 and
(there follows a trasnscript of the message header)
I thought 550 indicated relaying denied?
550-Invalid HELO (Xxxxxx) used by
62.249.xxx.xxx. See RFC1123 s5.2.5 and
(there follows a trasnscript of the message header)
I thought 550 indicated relaying denied?
Last edited by Fig; 27 May 2004 at 03:17 PM.
27 May 2004, 03:56 PM
#2
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550 is a relaying error.
We had an issue where some system had our IP address listed as an open relay (although it wasn't) in a shared database (basically a black-list). The client we tried to send mail to rejected any e-mails that were on this black-list database. I can't for the life of me remeber the company that runs this type of service though
Do a MX lookup on the domain you're sending mail to and note the mail servers IP addresses.
Then do a Telnet on port 25 and try the HELO command. It may give you more details to help identify the problem.
Stefan
We had an issue where some system had our IP address listed as an open relay (although it wasn't) in a shared database (basically a black-list). The client we tried to send mail to rejected any e-mails that were on this black-list database. I can't for the life of me remeber the company that runs this type of service though
Do a MX lookup on the domain you're sending mail to and note the mail servers IP addresses.
Then do a Telnet on port 25 and try the HELO command. It may give you more details to help identify the problem.
Stefan
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