[bug]: Subadressing not working

[alex9434]

What happened?

Subaddressing is not working as described in the manual at https://stalw.art/docs/smtp/inbound/rcpt#subaddressing
I have set-up an example server that is able to successfully receive emails at the address [email protected]:

2024-10-31T03:16:17Z INFO SMTP EHLO command (smtp.ehlo) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, domain = "winterfell.org"
2024-10-31T03:16:17Z INFO SPF EHLO check failed (smtp.spf-ehlo-fail) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, domain = "winterfell.org", result = SPF check failed (spf.fail), elapsed = 0ms
2024-10-31T03:16:17Z INFO IPREV check failed (smtp.iprev-fail) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, domain = "winterfell.org", result = IPREV permanent error (iprev.perm-error) { causedBy = DNS record not found (mail-auth.dns-record-not-found) { code = Non-Existent Domain } }, elapsed = 3ms
2024-10-31T03:16:17Z INFO SPF From check failed (smtp.spf-from-fail) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, domain = "winterfell.org", from = "[email protected]", result = SPF check failed (spf.fail), elapsed = 0ms
2024-10-31T03:16:17Z INFO SMTP MAIL FROM command (smtp.mail-from) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, from = "[email protected]"
2024-10-31T03:16:17Z INFO SMTP RCPT TO command (smtp.rcpt-to) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, to = "[email protected]"
2024-10-31T03:16:17Z INFO DKIM verification failed (smtp.dkim-fail) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, strict = false, result = [], elapsed = 0ms
2024-10-31T03:16:17Z WARN ARC sealer not found (arc.sealer-not-found) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, id = "rsa-example.com"
2024-10-31T03:16:17Z INFO ARC verification passed (smtp.arc-pass) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, strict = false, result = No DKIM signature (dkim.none), elapsed = 0ms
2024-10-31T03:16:17Z INFO DMARC check failed (smtp.dmarc-fail) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, strict = false, domain = "winterfell.org", policy = "none", result = No DMARC record (dmarc.none), elapsed = 2ms
2024-10-31T03:16:22Z INFO Queued message for delivery (queue.queue-message) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 57520, queueId = 205656325436108802, from = "[email protected]", to = ["[email protected]"], size = 1587, nextRetry = 2024-10-31T03:16:22Z, nextDsn = 2024-11-01T03:16:22Z, expires = 2024-11-05T03:16:22Z
2024-10-31T03:16:22Z INFO Delivery attempt started (delivery.attempt-start) queueId = 205656325436108802, from = "[email protected]", to = ["[email protected]"], size = 1587, total = 1
2024-10-31T03:16:22Z INFO New delivery attempt for domain (delivery.domain-delivery-start) queueId = 205656325436108802, from = "[email protected]", to = ["[email protected]"], size = 1587, total = 1, domain = "example.org", total = 0
2024-10-31T03:16:22Z INFO Possible spam message ingested (message-ingest.spam) queueId = 205656325436108802, from = "[email protected]", to = ["[email protected]"], size = 1587, total = 1, accountId = 93, documentId = 65, mailboxId = [2], blobId = "240e8dd7a75ba3cfd38532c78eadb3da4463cd9a106031cadf507c9bf1e2b585", changeId = 205656335055745028, messageId = "[email protected]", size = 1587, elapsed = 0ms
2024-10-31T03:16:22Z INFO DSN success notification (delivery.dsn-success) queueId = 205656325436108802, from = "[email protected]", to = ["[email protected]"], size = 1587, total = 1, to = "[email protected]", hostname = "localhost", code = 250, details = "OK"
2024-10-31T03:16:22Z INFO Delivery completed (delivery.completed) queueId = 205656325436108802, from = "[email protected]", to = ["[email protected]"], size = 1587, total = 1, elapsed = 0ms
2024-10-31T03:16:22Z INFO Delivery attempt ended (delivery.attempt-end) queueId = 205656325436108802, from = "[email protected]", to = ["[email protected]"], size = 1587, total = 1, elapsed = 0ms
2024-10-31T03:16:22Z INFO Full-text search index done (fts-index.index) accountId = 93, collection = email, documentId = 65, elapsed = 0ms

How can we reproduce the problem?

I unsuccessfully tried two approaches to make sub-addressing work based on the description in the manual at https://stalw.art/docs/smtp/inbound/rcpt#subaddressing, leading me to think that the feature might be broken. I am trying to get [email protected] delivered to [email protected]

1. Modification of config.toml
   The current version of config.toml seems to follow a different logic than described in the manual forcing me to slightly modify the example from the manual: I added the following line to config.toml
   session.rcpt.sub-addressing = [ { if = "matches('^([^.]+)\.([^.]+)@(.+)$', rcpt)", then = "$2 + '@' + $3" }, { else = false } ]
2. Web interface
   As a second try, i did the modifications directly in the web interface (see attached screenshot):

• Under sub-addressing on /settings/smtp-in-rcpt/edit press "+ Add condition"
• Write matches('^([^.]+)\.([^.]+)@(.+)$', rcpt) in "if" field
• Write $2 + '@' + $3 in "then" field
• Write false in "else" field
• Press "Save & Reload"

Both different trials lead to the same result: the mailbox for user [email protected] does not exist (see log below).

Version

v0.10.5

What database are you using?

RocksDB

What blob storage are you using?

RocksDB

Where is your directory located?

Internal

What operating system are you using?

Docker

Relevant log output

2024-10-31T03:08:35Z INFO SMTP EHLO command (smtp.ehlo) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 39860, domain = "winterfell.org"
2024-10-31T03:08:35Z INFO SPF EHLO check failed (smtp.spf-ehlo-fail) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 39860, domain = "winterfell.org", result = SPF check failed (spf.fail), elapsed = 0ms
2024-10-31T03:08:35Z INFO IPREV check failed (smtp.iprev-fail) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 39860, domain = "winterfell.org", result = IPREV permanent error (iprev.perm-error) { causedBy = DNS record not found (mail-auth.dns-record-not-found) { code = Non-Existent Domain } }, elapsed = 1ms
2024-10-31T03:08:35Z INFO SPF From check failed (smtp.spf-from-fail) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 39860, domain = "winterfell.org", from = "[email protected]", result = SPF check failed (spf.fail), elapsed = 0ms
2024-10-31T03:08:35Z INFO SMTP MAIL FROM command (smtp.mail-from) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 39860, from = "[email protected]"
2024-10-31T03:08:35Z INFO Mailbox does not exist (smtp.mailbox-does-not-exist) listenerId = "smtp", localPort = 25, remoteIp = 172.22.0.1, remotePort = 39860, to = "[email protected]"

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[mdecimus]

Try escaping the \ in the expression.