feat(server): Support for SMTP-over-TLS

[WangZhiYao]

As per the code restriction specified in the configuration schema, the SMTP_URL was required to start with smtp://.

Reactive-Resume/apps/server/src/config/schema.ts

Line 29 in fe77b14

SMTP_URL: z.string().url().startsWith("smtp://").optional(),

However, my email service provider utilizes SSL on port 465. Despite attempting various configurations based on the nodemailer documentation available here, I encountered difficulties in sending emails through the SMTP service using the following settings:

smtp://username:password@smtp.example.com:465
smtp://username:password@smtp.example.com:465/?secure=true
smtp://username:password@smtp.example.com:587/?requireTLS=true

Upon further investigation, I found that nodemailer supports the smtps:// protocol. Consequently, I have updated the validation in zod to permit the SMTP_URL configuration to start with smtps://. This adjustment now enables me to utilize the following configuration for sending emails via SMTP of my email service provider:

smtps://username:password@smtp.example.com:465

So I made this pull request, hoping to help people who have the same problem as me.

[AmruthPillai]

Seems like a valid PR, although the validation check could just be simplified to .startsWith("smtp") because it would include both smtp and smtps.

[WangZhiYao]

Seems like a valid PR, although the validation check could just be simplified to .startsWith("smtp") because it would include both smtp and smtps.

If change this to startsWith("smtp") instead of fully qualifying it as the protocol schema, then smtp+tls:// will also pass the validation check but nodemailer does not seem to support such a protocol, this may cause some other confusions, so I don't recommend for this.

[AmruthPillai]

Agreed, looks good to me! :)