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Is it possible to use another port for SMTP connection if 25 port is blocked by ISP?

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6 comments

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    Sait Firat NEMIS

    It's is very bad situation. There is no solution ?

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    Ivan Postnikov

    Hello Sait Firat NEMIS

    The limitation is on infrastructure level and Plesk has no direct influence on it.

    So, the solutions are to ask ISP to unblock port if possible or to setup relay.

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    Dennis Bronno Brouwer

    So I would need to Ask Google to open their Cloud Services on Port 25?

    For sure I already know the answer, I added a rule to the Firewall for port 2525 and I would like to use the SMTP server on that Port is that possible?

     

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    Phenneau

    this means no PLESK on Google GCP, a real constraint

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    Ivan Postnikov

    Hello,

    Dennis Bronno Brouwer Phenneau

    Google Cloud doesn't open port 25 for anyone.

    However, there's a workaround, see the details here.

     

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    Phenneau

    indeed, GCP will not open Port 25, and yes the workaround , it works, we went for SendGrid but there is huge constraint for webhosters: each domain must be validated by endgrid, that means 3 records per domain. Each new domain must be manually validated over the SendGrid platform. We havent figured out yet out to have our Server IP validated for all the domains.More over they are costs associated with the workaround.

     

    Regards

     

    Philippe

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