SMTP Connector: Remote server did not respond to a connection attempt

SMTP Connector: Remote server did not respond to a connection attempt (Full Version)

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Aok -> SMTP Connector: Remote server did not respond to a connection attempt (21.Mar.2006 4:05:23 PM)
Hello, I'm running into this issue right now, some servers i send e-mail to are fines, and some servers stay in Exchange with the error: Remote server did not respond to a connection attempt. I nslookup them and it resolves, so it isnt a DNS issue, where should i start to troubleshoot these ? regards, Aok

Xguru -> RE: SMTP Connector: Remote server did not respond to a connection attempt (22.Mar.2006 12:53:48 AM)
Increse logging under server properties for "Transport". When the connection for a domain fails you will have a Event generated that could give us an idea. Also get in to www.dnsstuff.com and check if your server is blacklisted (outgoing IP and MX both). XGURU

Aok -> RE: SMTP Connector: Remote server did not respond to a connection attempt (22.Mar.2006 2:49:41 PM)
Hello, There are no events in the event viewer regarding this. However a user told me he had to auth to a smtp server to try sending e-mail, which is weird cause he's going through exchange. Here's what i got from dnsstuff; PTR MISSING! 67.69.108.122 has no reverse DNS entry; some mail servers may not accept your mail. 1200 seconds 0 ms

Aok -> RE: SMTP Connector: Remote server did not respond to a connection attempt (22.Mar.2006 3:56:38 PM)
Update: Now getting multiples errors; 1. There was a SMTP communication problem with the recipient's email server. 2. You do not have permission to send to this recipient. I guess this is all related to my problem, I was also reading stuff about it. It could be related to a DNS issue, where the remote mail server couldn't be able to reverse lookup of the mail server and take it as spam e-mail. regards, Aok

Xguru -> RE: SMTP Connector: Remote server did not respond to a connection attempt (22.Mar.2006 7:15:49 PM)
You are right.... Thera are a lot many server out there who do not accept email from IP's that do not have a reverse entry in DNS or PTR record. Ask your ISP to add a reverse PTR record for your connecting IP. XGURU

Aok -> RE: SMTP Connector: Remote server did not respond to a connection attempt (22.Mar.2006 10:01:51 PM)
Yea, i solved it, i'm now using the ISP smtp server in exchange and everything works fine, i asked the ISP to add a PTR for our server, which will be done shortly, and hopefully solve the issue. regards, Aok

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