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I need to send over port 25, but the ISP has blocked it. I need an alternative since my printer has no option for TLS / SSL and the provider requires port 587 with TLS or SSL

Posted on 2016-08-25
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Last Modified: 2016-08-31
Hi all,

I need to send over port 25, but the ISP has blocked it. I need an alternative since my printer has no option for TLS / SSL and the provider requires port 587 with TLS or SSL I cannot use this and port 25 is blocked also.

I have the latest firmware, but I guess the printer is just to old. I can give an alternative port and some SMTP authentication options, but there is nothing like SSL or TLS. My provider requires port 587 and TLS or SSL.

Perhaps the are providers who offer an email address that still uses port 25?

Anyone any idea on how to solve this with the hardware and firmware limitations that I have.

Thank you,
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Question by:ElisysAutomatisering
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13 Comments
 
LVL 82

Expert Comment

by:Dave Baldwin
ID: 41771025
It isn't the email address but the network service that is blocked.  Too many home spammers used the mail server in IIS to send out spam on port 25 which is why it is blocked.

I am curious why you would be sending data to a printer over port 25.  Does your printer receive email?  And if it is on your local network, the ISP restrictions don't apply.  Where are the computer and the printer located?
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Author Comment

by:ElisysAutomatisering
ID: 41771027
I have no server and I need my printer to send OUT emails (scanner function). I need an option to bypass TLS / SSL requirements.
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Assisted Solution

by:John Hurst
John Hurst earned 125 total points
ID: 41771029
I do not know of any ISP that will let this happen. All my email accounts and client email accounts have been secured for a long time now.

So you cannot do what you want with the printer you have.
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Author Comment

by:ElisysAutomatisering
ID: 41771032
Hi John,

well, I thought, maybe there is a provider that can still do this. I found this:

https://www.authsmtp.com/faqs/faq-13.html
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LVL 90

Expert Comment

by:John Hurst
ID: 41771036
You can try, but there are really a huge number of issues because of spammers and the Crypto viruses.
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LVL 20

Assisted Solution

by:CompProbSolv
CompProbSolv earned 125 total points
ID: 41771040
What is the make and model of the printer?

It would be a bit convoluted but you could set up a mail server locally that would receive the mail from the printer on port 25 and then send it out with TLS or SSL on 587.  That may not be worth the effort in comparison to replacing the printer.
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Author Comment

by:ElisysAutomatisering
ID: 41771065
It is a Dell 3115cn
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Assisted Solution

by:Dave Baldwin
Dave Baldwin earned 125 total points
ID: 41771070
No matter what you do with the printer, the block your ISP has put on port 25 will prevent you from using it.  Many ISPs are blocking port 25.  CompProbSolv's suggestion of a local mail server is the only thing I can think of.
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Author Comment

by:ElisysAutomatisering
ID: 41771074
Yes, and https://www.authsmtp.com/faqs/faq-13.html since they use different ports and add the authentication afterwards, when it already has left the printer / scanner.
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Assisted Solution

by:footech
footech earned 125 total points
ID: 41771220
If you change to a business line the ISP shouldn't block port 25.  In the past, I know some ISPs would unblock port 25 for your connection (even for home service) if you contacted them and explained the need.
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Author Comment

by:ElisysAutomatisering
ID: 41771359
Yes, Footech, that may be possible. I will give them a call.

This is an email reactie of AuthSMTP:

We do not 'require' SSL / TLS at this time - so would recommend you sign up and trial it to ensure it works as you require.

Thank you... AuthSMTP Support.
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Accepted Solution

by:
ElisysAutomatisering earned 0 total points
ID: 41772447
Hi all,

I have tested this: https://www.authsmtp.com/

WORKS GREAT

It can send over port 25 now and if you take a closer look, it still is a safe method. Nice server, easy control panel.

Thank you all for your input.
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Author Closing Comment

by:ElisysAutomatisering
ID: 41777757
It works, so therefor my solution is the best
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