Forum Replies Created

Viewing 10 replies - 1 through 10 (of 10 total)
  • Thread Starter dev1337

    (@dev1337)

    We finally identified the root cause of the problem where only some WooCommerce orders were getting their Mollie payment status updated automatically.

    It turned out not to be a bug in WooCommerce or Mollie directly, but rather an interaction with SiteGround’s security system.

    SiteGround’s logs showed that certain Mollie webhook IPs (in our case 34.76.201.228 and 34.76.90.110) were being challenged by their CAPTCHA / firewall service and ended up greylisted. This explains why only some webhook calls reached the shop while others silently failed.

    The reason for the block is important: SiteGround detected a large number of PHPMail executions triggered from those Mollie IPs across their infrastructure. From the host’s point of view, this is suspicious behavior and justifies the security response.

    SiteGround has now whitelisted these IPs for us, and the webhook updates are flowing again. But the underlying issue remains: if Mollie’s servers keep generating PHPMail-like requests, they risk being blocked again by hosting providers with strict security layers.

    For other users affected:

    • If you are on SiteGround and see the same symptoms, ask support to check their firewall/greylist logs for Mollie IPs.
    • Once confirmed, they can whitelist those IPs.

    For Mollie / the plugin developers:

    The webhook servers really should not be generating traffic that looks like PHPMail spam. This is causing unnecessary friction with hosting firewalls. Please investigate this behavior on the mentioned IPs and clarify whether this is intentional or a misconfiguration. Otherwise, SiteGround (and likely other hosts) may continue to block webhook requests.

    Hope this helps

    We finally identified the root cause of the problem where only some WooCommerce orders were getting their Mollie payment status updated automatically.

    It turned out not to be a bug in WooCommerce or Mollie directly, but rather an interaction with SiteGround’s security system.

    SiteGround’s logs showed that certain Mollie webhook IPs (in our case 34.76.201.228 and 34.76.90.110) were being challenged by their CAPTCHA / firewall service and ended up greylisted. This explains why only some webhook calls reached the shop while others silently failed.

    The reason for the block is important: SiteGround detected a large number of PHPMail executions triggered from those Mollie IPs across their infrastructure. From the host’s point of view, this is suspicious behavior and justifies the security response.

    SiteGround has now whitelisted these IPs for us, and the webhook updates are flowing again. But the underlying issue remains: if Mollie’s servers keep generating PHPMail-like requests, they risk being blocked again by hosting providers with strict security layers.

    For other users affected:

    • If you are on SiteGround and see the same symptoms, ask support to check their firewall/greylist logs for Mollie IPs.
    • Once confirmed, they can whitelist those IPs.

    For Mollie / the plugin developers:

    The webhook servers really should not be generating traffic that looks like PHPMail spam. This is causing unnecessary friction with hosting firewalls. Please investigate this behavior on the mentioned IPs and clarify whether this is intentional or a misconfiguration. Otherwise, SiteGround (and likely other hosts) may continue to block webhook requests.

    Hope this helps

    we are on siteground but the others seems not.

    where is your shop hosted? Is it siteground?

    we are also on siteground and have that issue, but I doubt that this is part of the problem.

    the problem is, that nobody from mollie is replying here with real informations. You only get that „can you send us your logfile xyz“ and that’s all. That’s pretty disappointing from a company that size.

    @femiyb @mollieintegration everybody here is waiting for your help?!

    Thread Starter dev1337

    (@dev1337)

    @femiyb @mollie this is a serious problem and several people wait for a response and bugfix. Why does it take that long and why is nobody replying here properly?

    @mollieintegration @spreid Sorry for hijacking this thread but since several people have this problem, we would also be happy to help and give you all details / access you need to our systems, same problem and same symptoms – just in case @spreid is not available in time.

    Thread Starter dev1337

    (@dev1337)

    We already provided your support team with all the necessary details and did receive a reply few minutes ago, but unfortunately it was more of a generic auto-response, suggesting steps like updating the plugin or checking the log files. We’ve done all of this, yet nothing has changed. The issue persists, and we still have to manually update orders using the “Check payment on Mollie” action.

    Log File Mollie:

    https://privatebin.syde.com/?55f75f728cb7009f#4tCK6C32X6qUtZ6fX7m4LLRCFT1wBPuYLSkAVNkXwZjP

    System Status:
    https://privatebin.syde.com/?ec708960b63e41e7#ATmdTqquZsRrc1rKGh9nLW5BWK4BmNVGhkaqJ9r9S3ZP

    • This reply was modified 7 months, 3 weeks ago by dev1337.
    • This reply was modified 7 months, 3 weeks ago by dev1337.
    Thread Starter dev1337

    (@dev1337)

    We send you the log files. How to proceed now?

Viewing 10 replies - 1 through 10 (of 10 total)