Verizon blocking email because we refuse blank mail from |
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Brian Lewis 
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 Topic: Verizon blocking email because we refuse blank mail fromPosted: 09 January 2004 at 5:48pm |
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Well after months I have finally found out why our domain is not allowed to send email to any verizon.net address! Back in Oct 03 they started using Brightmail and started performing a 'sender verification' check. This is not an SMTP VRFY but rather their system once you do a MAIL FROM to them instantly makes a connection back to your domain to verify that it can send a message to the sender! But whichever moron configured this forgot to configure the test system to put a 'MAIL FROM' email address in the test, so when Spamfilter ISP blocks the request because Mail from is empty, it immediately causes Verizon to block accepting the message you are trying to send the Verizon endloser. Since Logsat Spamfilter ISP has in realtime has an activity log, I was able to attempt a connection to relay.verizon.net, put a MAIL FROM: ddd@alexanders.net and on my Spamfilter it displays the error! 01/09/04 13:31:38:718 -- (1928) Resolving 206.46.170.180 - sc004pub.verizon.net
For the time being I have configured Spamfilter ISP to quarantine blank senders, but I would rather have it not quarantine such messages and 'refuse the connection'. What is so idiotic is Verizon is checking and making sure our Mail-From is legit, yet they don't want to play by the same rules and allow us to do the same checking when their system does a test with a blank from address!
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eric
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Posted: 10 January 2004 at 8:05am |
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i noted the same problems with lamer postmaster on several european isp`s too. so i changed the ehlo banner (welcome) of logsat in : .this systems complies strict with rfc 821/22smtp and rfc 1912rdns, but blank senders are dropped. afterwards, no more questions asked by lamer postmaster anymore.... :-) |
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ASB
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Posted: 10 January 2004 at 10:45pm |
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Good idea... :)
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Judu
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Posted: 04 February 2004 at 6:25pm |
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I too have been plagued by the blocking of sending emails to verizon.net customers from my domain bhs1.org I have un checked the " Reject if empty "Mail From"" and still having problems. Running Spam Filter v.1.2.0.212 (REGISTERED) Any assistance would be greatly appreciated, thanks Judu
Your message did not reach some or all of the intended recipients. Subject: The following recipient(s) could not be reached: abuse@verizon.net on 2/4/2004 6:05 PM |
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LogSat
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Joined: 25 January 2005 Location: United States Status: Offline Points: 4104 |
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Posted: 04 February 2004 at 11:16pm |
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Judu, Can you please try connecting to verizon manually via telnet to send them an email, and record and post back the session results? From a DOS prompt on your SMTP server (it's important you perform this from your SMTP server itself), can you issue the commands in red below? Verizon's response is in blue. Roberto F. telnet relay.verizon.net 25
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