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[GH-ISSUE #333] Relay recipient blocklist #221

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opened 2026-03-15 13:17:57 +03:00 by kerem · 5 comments

kerem commented

2026-03-15 13:17:57 +03:00

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Originally created by @zmweske on GitHub (Jul 11, 2024).
Original GitHub issue: https://github.com/axllent/mailpit/issues/333

First off, I love this application and thank you for creating and maintaining it.

Would you consider creating a blocklist as well? I think that one simple reason for this would be to block all emails sent to admin@admin.lan for some services so they don't spam a downstream SMTP provider (and prevent spam filtering).

Similar to the allowlist defined by --smtp-relay-matching, the blocklist would (in the same but opposite way- list below copied from https://github.com/axllent/mailpit/issues/108#issuecomment-1535317838):

auto-forwarding silents drops addresses on the blocklist (logged in debug), and sending all other matching addresses (if any). A disallowed address should not block any others from being sent.
API / frontend will not allow any sending the address list contains invalid addresses, and return an error if any addresses are not allowed
Frontend would ideally warn beforehand when entering the address

Haven't had time to set up a dev environment yet, but based on #108, it should be very similar with just the inverse logic and an extra branch for the config flag?

Thanks again for your work with this project!

Originally created by @zmweske on GitHub (Jul 11, 2024). Original GitHub issue: https://github.com/axllent/mailpit/issues/333 First off, I love this application and thank you for creating and maintaining it. Would you consider creating a blocklist as well? I think that one simple reason for this would be to block all emails sent to [admin@admin.lan](mailto:admin@admin.lan) for some services so they don't spam a downstream SMTP provider (and prevent spam filtering). Similar to the allowlist defined by `--smtp-relay-matching`, the blocklist would (in the same but opposite way- list below copied from https://github.com/axllent/mailpit/issues/108#issuecomment-1535317838): - auto-forwarding silents drops addresses on the blocklist (logged in debug), and sending all other matching addresses (if any). A disallowed address should not block any others from being sent. - API / frontend will not allow any sending the address list contains invalid addresses, and return an error if any addresses are not allowed - Frontend would ideally warn beforehand when entering the address Haven't had time to set up a dev environment yet, but based on #108, it should be very similar with just the inverse logic and an extra branch for the config flag? Thanks again for your work with this project!

kerem

2026-03-15 13:17:57 +03:00

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kerem commented

2026-03-15 13:18:14 +03:00

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@axllent commented on GitHub (Jul 12, 2024):

Thank you for opening a new issue @zmweske. I will look into this in the near future and see what I can do.

@axllent commented on GitHub (Jul 12, 2024): Thank you for opening a new issue @zmweske. I will look into this in the near future and see what I can do.

kerem commented

2026-03-15 13:18:19 +03:00

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@axllent commented on GitHub (Jul 14, 2024):

@zmweske I have added this feature in v1.19.1 and is documented here.

Please let me know if this works as you expected?

@axllent commented on GitHub (Jul 14, 2024): @zmweske I have added this feature in [v1.19.1](https://github.com/axllent/mailpit/releases/tag/v1.19.1) and is [documented here](https://mailpit.axllent.org/docs/configuration/smtp-relay/). Please let me know if this works as you expected?

kerem commented

2026-03-15 13:18:24 +03:00

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Owner

@axllent commented on GitHub (Jul 21, 2024):

I'm closing this issue as it was released a week ago. Please feel free to re-open if there are issues.

@axllent commented on GitHub (Jul 21, 2024): I'm closing this issue as it was released a week ago. Please feel free to re-open if there are issues.

kerem commented

2026-03-15 13:18:29 +03:00

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@zmweske commented on GitHub (Jul 23, 2024):

Had been busy but finally got around to testing it out- works like a charm- thanks so much!

@zmweske commented on GitHub (Jul 23, 2024): Had been busy but finally got around to testing it out- works like a charm- thanks so much!

kerem commented

2026-03-15 13:18:34 +03:00

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Owner

@axllent commented on GitHub (Jul 24, 2024):

Great, thanks for the feedback!

@axllent commented on GitHub (Jul 24, 2024): Great, thanks for the feedback!

kerem referenced this issue

2026-03-15 14:21:15 +03:00

[PR #221] [CLOSED] Bump vue from 3.3.12 to 3.4.3 #480