SMTP Error
21 January 2004, 02:24 PM
#1
Scooby Regular
Thread Starter
Hi,
trying to send some e-mail to a client @ Barclays. When the server connects to their SMTP servers, we get a 412 Server Error.
Can some try Telnet'ing into their servers on port 25?
should be mailgate01.barclays.co.uk or mailgate02.barclays.co.uk
Stefan
trying to send some e-mail to a client @ Barclays. When the server connects to their SMTP servers, we get a 412 Server Error.
Can some try Telnet'ing into their servers on port 25?
should be mailgate01.barclays.co.uk or mailgate02.barclays.co.uk
Stefan
21 January 2004, 02:36 PM
#2
Scooby Regular
Thread Starter
If I try telnet mailgate01.barclays.co.uk 25 I get:-
421 4.0.0 mailgate02.barclays.co.uk Server error
Connection to host lost.
If I try the same from home, I get the usual 220 welcome message.
Can telnet to other client SMTP server's so I'm guessing they may have some block on our IP address. That sound right?
Stefan
421 4.0.0 mailgate02.barclays.co.uk Server error
Connection to host lost.
If I try the same from home, I get the usual 220 welcome message.
Can telnet to other client SMTP server's so I'm guessing they may have some block on our IP address. That sound right?
Stefan
22 January 2004, 07:25 AM
#5
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Stefan,
The RFC states that 4xx errors are not permanent unlike 5xx errors. Hence the recommendation is either try again later or you are not allowed to use that SMTP server
[Edited by prana - 1/22/2004 7:26:35 AM]
The RFC states that 4xx errors are not permanent unlike 5xx errors. Hence the recommendation is either try again later or you are not allowed to use that SMTP server
[Edited by prana - 1/22/2004 7:26:35 AM]
22 January 2004, 11:45 AM
#6
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Thread Starter
It's happening all the time from here, yet is 100% successful from another site. It looks like we're being denied access, so the tech guys are Barclays are looking at the error on their end to see why.
Stefan
Stefan
22 January 2004, 01:03 PM
#7
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my guess is that they have a ACL that prevents your source IP from relaying
Otherwise, you have a non-standard RFC compliant mail client that are sending non-ascii chars to the server, and it thinks you been a bad boy
0dh, 0ah, 00h <--- hehe
Otherwise, you have a non-standard RFC compliant mail client that are sending non-ascii chars to the server, and it thinks you been a bad boy
0dh, 0ah, 00h <--- hehe
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