Starting about a week ago, all outgoing messages sent from our Imail server to
any @att.net account have been failing delivery. Every time our SMTP server
tries to connect to att.net or worldnet.att.net, we get the following error:
450 busy - please try later
This ONLY happens when attempting to send to AT&T's mail server. We are
delivering mail to other servers fine. We are receiving mail from @att.net
email accounts fine. But we can reproduce this problem when sending from any
of the domains on our mail server to any @att.net email account.
We contacted att.net's mail administrators and were told that the problem must
be on our end and that they would not help us. I'm stumped.
I've included one complete example from our server logs below. Thanks in
advance for any ideas or advice you can give me.
Keith W. Schoenly
Addison Technologies, Inc.
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02:27 16:52 SMTPD(00EF01BC) [151.197.165.4] connect 151.197.165.10 port 4980
02:27 16:52 SMTPD(00EF01BC) [151.197.165.10] HELO kschoenl
02:27 16:52 SMTPD(00EF01BC) [151.197.165.10] MAIL FROM: <[EMAIL PROTECTED]>
02:27 16:52 SMTPD(00EF01BC) [151.197.165.10] RCPT TO: <[EMAIL PROTECTED]>
02:27 16:52 SMTPD(00EF01BC) [151.197.165.10]
D:\IMail\spool\D748500ef01bce269.SMD 618
02:27 16:52 SMTP-(041078BE) processing D:\IMail\spool\Q748500ef01bce269.SMD
02:27 16:52 SMTP-(041078BE) [x] looking up att.net in HOSTS and MX
02:27 16:52 SMTP-(041078BE) Info - Found att.net in DNS Cache
02:27 16:52 SMTP-(041078BE) Trying att.net (0)
02:27 16:52 SMTP-(041078BE) [x] Connecting socket to service <SMTP> on host
<att.net> using protocol <tcp>
02:27 16:52 SMTP-(041078BE) Info - Found att.net in DNS Cache
02:27 16:52 SMTP-(041078BE) Connect att.net [204.127.134.23:25] (1)
02:27 16:52 SMTP-(041078BE) 450 busy - please try later
02:27 16:52 SMTP-(041078BE) SMTP_DELIV_FAILED
02:27 16:52 SMTP-(041078BE) >QUIT
02:27 16:52 SMTP-(041078BE) [E] didn't send "QUIT": connection aborted02:27
16:52 SMTP-(041078BE) rl-recv: connection aborted
02:27 16:52 SMTP-(041078BE)
02:27 16:52 SMTP-(041078BE) [u] closing socket (u)
02:27 16:52 SMTP-(041078BE) requeuing D:\IMail\spool\Q748500ef01bce269.SMD R0 T1
02:27 16:52 SMTP-(041078BE) finished D:\IMail\spool\Q748500ef01bce269.SMD
status=3
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