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Cant establish SMTP connection

Offline shoaib

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Re: Cant establish SMTP connection
« Reply #15 on: October 28, 2008, 04:23:48 AM »
You can check your IP in one of those sites:
http://www.us.sorbs.net/lookup.shtml

Checked, not listed.

Offline F650

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Re: Cant establish SMTP connection
« Reply #16 on: October 29, 2008, 12:11:29 AM »
I have the same problem.
I could send e-mail to yahoo, hotmail, and mynet but could not receive. Every time i received "Cant establish an SMTP connection" message. I checked my static IP for the blacklist but it was clear. I also checked my server with nmap and port 25 is open. My settings is at  "Allow private and public (secure POP3S)". I could send but could not receive from those services. I have not any experiment on the other services. When i receive the my sme servers messages from yahoo and the others, they did not put me on the junk mail folder or like the spam. I could not understand the problem.   :shock: Thanks for your attentions.

Offline janet

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Re: Cant establish SMTP connection
« Reply #17 on: October 29, 2008, 01:56:45 AM »
F650

Quote
I have the same problem.
I could send e-mail to yahoo, hotmail, and mynet but could not receive.

Your problem is different to the original poster. OP complains of not being able to send.

Please look at this thread as it may provide some clues and troubleshooting tips.

http://forums.contribs.org/index.php?topic=42355.msg199352#msg199352
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Offline F650

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Re: Cant establish SMTP connection
« Reply #18 on: October 29, 2008, 02:45:58 AM »
Thanks for your guide.

Offline akhilmathema

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Re: Cant establish SMTP connection
« Reply #19 on: October 31, 2008, 05:32:57 AM »
Checked, not listed.

try to use your ISP's smtp gateway
# config set SMTPSmartHost your.isp.com

even if doesn't work verify qpsmtpd has public access
# config show qpsmtpd

Offline shoaib

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Re: Cant establish SMTP connection
« Reply #20 on: October 31, 2008, 05:51:06 AM »

try to use your ISP's smtp gateway
# config set SMTPSmartHost your.isp.com

even if doesn't work verify qpsmtpd has public access
# config show qpsmtpd

Yeah I'm doing that (using my ISP's smtp), its working, but my company's policy is against that. Therefore its not a permanent solution. I've written to gmail, yahoo and hotmail. So far none of them has replied ! I guess my last option is to get a new ip from a different ip block.

Offline janet

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Re: Cant establish SMTP connection
« Reply #21 on: October 31, 2008, 08:31:48 AM »
shoaib

Quote
I guess my last option is to get a new ip from a different ip block.

That won't necessarily resolve the problems.
Your sending patterns are analysed by hotmail etc, and they use algorithms to decide if you are behaving like a spammer. They are quite agressive too.

Simply sending ten messages in quick succession to different hotmail accounts is enough to get you blocked by them (temporarily usually).
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Offline shoaib

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Re: Cant establish SMTP connection
« Reply #22 on: October 31, 2008, 08:36:10 AM »
shoaib

That won't necessarily resolve the problems.
Your sending patterns are analysed by hotmail etc, and they use algorithms to decide if you are behaving like a spammer. They are quite agressive too.

Simply sending ten messages in quick succession to different hotmail accounts is enough to get you blocked by them (temporarily usually).

Then what? Should I change my ISP?? (very difficult task if not impossible)!!!

Offline janet

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Re: Cant establish SMTP connection
« Reply #23 on: October 31, 2008, 08:47:17 AM »
shoaib

Quote
Then what? Should I change my ISP?? (very difficult task if not impossible)!!!

I don't understand your attitude of confusion.
You have been given good advice in replies 6, 9, 10 etc and yet you still seem to not understand what the issue is.
Those ISP's are blocking you because of the mail sending pattern your server does.

The way to resolve the issues is to fill in the form at hotmail (& other ISP's tech support pages) eg
https://support.msn.com/eform.aspx?productKey=edfsmsbl&ct=eformts&scrx=1
which will eventually get your server/domain/IP whitelisted at hotmail, then they will acecept lots of emails from you without them being in fear that you are a spammer.

As stated before, you will have to provide many (almost confidential) details to them though, which involve running tests on your server, as per the data being requested in the form fields.
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Offline shoaib

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Re: Cant establish SMTP connection
« Reply #24 on: October 31, 2008, 09:36:31 AM »
I've filled and submitted the form which you prescribed earlier, and also wrote a separate email, haven't heard from them yet. No confusion just frustration ! I apologize for my bitter snapping remarks, (no need to bite the helping hand) :(
« Last Edit: October 31, 2008, 09:42:08 AM by shoaib »

Offline pfloor

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Re: Cant establish SMTP connection
« Reply #25 on: October 31, 2008, 03:34:12 PM »
I've filled and submitted the form which you prescribed earlier, and also wrote a separate email, haven't heard from them yet. No confusion just frustration ! I apologize for my bitter snapping remarks, (no need to bite the helping hand) :(

I'm not going to read this entire thread so if you haven't already done so, you MUST configure an spf record.  It is easy to do if you use DynDNS (and I assume other DNS providers provide a way for you to add an spf record).  This fixed all my problems with hotmail, msn, etc. a long time ago and I never had to contact hotmail.  See this thread, the OP had similar problems with hotmail.

http://forums.contribs.org/index.php?topic=37898.msg170657#msg170657

In life, you must either "Push, Pull or Get out of the way!"

Offline janet

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Re: Cant establish SMTP connection
« Reply #26 on: November 01, 2008, 12:54:27 AM »
shoaib & pfloor

Quote
.. you MUST configure an spf record. 

That was advised to do way back in reply #6, but OP only says:

"I have a valid MX record for my IP, a valid reverse DNS, and a valid PTR."

Part of the confirmation process when working through the form at hotmail is to confirm you have a SPF record. Shoaib you must set one up as pfloor says.

Please search before asking, an answer may already exist.
The Search & other links to useful information are at top of Forum.