MX records for protonmail.com
protonmail.com receives email through 2 mail servers, with mail.protonmail.ch at the highest priority (5).
Mail servers
| Priority | Mail server | IPv4 |
|---|---|---|
| 5 | mail.protonmail.ch | 185.70.42.128 |
| 10 | mailsec.protonmail.ch | 185.70.42.129 |
More lookups for protonmail.com
MX (Mail Exchanger) records tell other mail servers where to deliver email for protonmail.com. Each record has a priority, and sending servers try the lowest number first, falling back to higher ones for redundancy. If these records are missing or wrong, the domain cannot receive mail. To check any other domain, use the MX Lookup tool.