(05-08-2018, 07:31 PM)johnmay Wrote: Will this logic be applied to POP and IMAP so I prepare in advance for it and set UseTLS before Port like in SMTP case?
Yes, similar UseTLS logic applies to POP3 and IMAP as well (and NNTP and FTP, too). However, those protocols do not have a dedicated Explicit TLS port, like SMTP does. Their Explicit TLS usage is typically on their normal non-SSL/TLS ports. So, you will probably see the Port swap occur only when using utUseImplicitTLS rather than utUseExplicitTLS. For historical reasons, SMTP is different in regard to its use of a dedicated Explicit TLS port.