fix(smtp): improve port handling and response parsing; enhance DKIM

[productdevbook]

• Updated port assignment logic to handle undefined values correctly.
• Refactored SMTP response parsing to better handle multi-line responses.
• Improved DKIM signing by canonicalizing headers and body, ensuring correct header order.
• Added checks for expected SMTP response codes.
• Enhanced error handling during DKIM signing.
• Adjusted the way additional headers are inserted into the MIME message.

test: skip mailCrab integration tests in non-GitHub Actions environments

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​vitest/​coverage-v8@​3.1.1 ⏵ 3.1.2			+1
	vitest@​3.1.1 ⏵ 3.1.2
	@​types/​node@​22.14.1 ⏵ 22.15.3	+1		+1
	eslint@​9.24.0 ⏵ 9.26.0

View full report

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	65.36%	1242 / 1900
🔵	Statements	65.36%	1242 / 1900
🔵	Functions	83.56%	61 / 73
🔵	Branches	64.09%	216 / 337

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/providers/smtp/provider.ts	40.93%	42.25%	56.25%	40.93%	60-61, 114-116, 136-140, 144-163, 169-173, 181-182, 187, 198-201, 204-206, 214-249, 256-278, 288-294, 301-304, 317-321, 323-324, 330-334, 337-338, 342-348, 353-371, 376-392, 397-406, 413-462, 485-486, 517-518, 526-528, 550-551, 568-578, 580-589, 607-608, 615-621, 625-631, 653-664, 668-684, 688-689, 693-698, 702-713, 717-735, 739-745, 749-750, 772-782, 784-793, 800-856, 863-883

Generated in workflow #37 for commit 7e294d5 by the Vitest Coverage Report Action

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/productdevbook/unemail@9

commit: 7e294d5