# Traefik | More than 10 domains in a rule | Easier way needed? **URL:** \ **Category:** Traefik v2\ **Tags:** docker\ **Created:** [April 14, 2022, 8:47am UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143 "2022-04-14T08:47:26Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![mf1](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/mf1/32/5037_2.png) [@mf1](https://community.traefik.io/u/mf1)\ **Post date:** [April 14, 2022, 8:47am UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143/1 "2022-04-14T08:47:26Z")
The normal way for a site is to define the hostnames like this. ` - "traefik.http.routers.nginx.rule=Host(`domain.com`, `www.domain.com`)"` I have a project with about 10+ domains pointed to the service.... both with and without `www.` ... the configuration line will be larger and larger. Is there an easier way to add all domains? Like a text file which can be used for both rules SSL and non-SSL, too? ---
**Author:** ![tommoulard](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/tommoulard/32/2997_2.png) [@tommoulard](https://community.traefik.io/u/tommoulard)\ **Post date:** [April 15, 2022, 10:24am UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143/2 "2022-04-15T10:24:09Z")
Hello @mf1, I don't have a real solution for you, but you could try using the `HostRegexp` matcher, matching `(www.)?domain.com`. This way would allow defining a single host for both, thus cutting in half the definition size. ---
**Author:** ![mf1](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/mf1/32/5037_2.png) [@mf1](https://community.traefik.io/u/mf1)\ **Post date:** [April 15, 2022, 11:50am UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143/3 "2022-04-15T11:50:42Z")
Hi @tommoulard . Your idea looks great and perfect for this project. In this scenario it could safe more than 50% of definitions.... Mainly there is one domain with different syntax's. In my example with optional plural "s", optional hyphen "-", optional "www." and of course different TLDs. `- "traefik.http.routers.nginx.rule=HostRegexp(`(www.)?dom(-)?ain(s)?.(tld1|tld2|tld3|tld4)`)"` I've tried the optional www version, too. But this isn't working. Do I need to install more something more? ---
**Author:** ![tommoulard](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/tommoulard/32/2997_2.png) [@tommoulard](https://community.traefik.io/u/tommoulard)\ **Post date:** [April 15, 2022, 12:32pm UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143/4 "2022-04-15T12:32:51Z")
I don't see any issues with your regexp : [regex101: build, test, and debug regex](https://regex101.com/r/Ozy1QB/1) You can use this tool to engineer a regexp that suits your needs 😄 ---
**Author:** ![mf1](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/mf1/32/5037_2.png) [@mf1](https://community.traefik.io/u/mf1)\ **Post date:** [April 15, 2022, 2:13pm UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143/5 "2022-04-15T14:13:34Z")
I always get `404 page not found` from Traefik proxy. Even I used the smallest rule `- "traefik.http.routers.nginx.rule=HostRegexp(`(www.)?domain.com`)"` Using ... `- "traefik.http.routers.nginx.rule=Host(`domain.com`, `www.domain.com`)"` ... everything is working fine. Using the more complex rule I get additional SSL issue because the LetsEncrypt certificate wasn't pulled, I guess. It's really enough to just replace `Host` by `HostRegexp` parameter? No additional flag is needed? ---
**Author:** ![tommoulard](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/tommoulard/32/2997_2.png) [@tommoulard](https://community.traefik.io/u/tommoulard)\ **Post date:** [April 15, 2022, 2:46pm UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143/6 "2022-04-15T14:46:15Z")
It's because you are not using the correct format to define regexps in the `HostRegexp` matcher. You could have done this: ```yaml label: traefik.http.routers.nginx.rule: HostRegexp(`{wordwideweb:(www\.)?}domain.com`) ``` See _Regexp Syntax_ on [Traefik Routers Documentation - Traefik](https://doc.traefik.io/traefik/routing/routers/#rule) ---
**Author:** ![mf1](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/mf1/32/5037_2.png) [@mf1](https://community.traefik.io/u/mf1)\ **Post date:** [April 15, 2022, 3:23pm UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143/7 "2022-04-15T15:23:32Z")
Thanks. I've switched all the labels from "hyphen & quotes & equal" to "nothing & colon" Now it's working with the standard rule. www and non-www. I also use curly bracket for each rule which is now also named ```auto traefik.http.routers.nginx.rule: HostRegexp(`{worldwideweb:(www\.)?}dom{hyphen:(-)?}ain{plural:(s)?}.{tld:(tld1|tld2|tld3|tld3)}`) ``` Using the more complex rule the normal domain is working, also with SSL. All other domains showing `ERR_SSL_PROTOCOL_ERROR`. How can I solve this? Additional: Is it needed to have unique Match names overall projects running this Traefik instance? ---
**Author:** ![mf1](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/mf1/32/5037_2.png) [@mf1](https://community.traefik.io/u/mf1)\ **Post date:** [April 15, 2022, 6:01pm UTC](https://community.traefik.io/t/traefik-more-than-10-domains-in-a-rule-easier-way-needed/14143/8 "2022-04-15T18:01:23Z")
I've found the reason why this isn't working. LetsEncrypt isn't usable with HostRegexp. In this case I have to put all domains separately ... this is what I actually wanted to make easier... 😃